# Jan Siemerink Match Log

Source: https://tennis-db.com/players/222720/jan-siemerink/matches
Tour: ATP
Rows on canonical first page: 200
Total matching rows: 529
Main-draw summary: 261-260 (50.1%)
Qualifying matches shown separately in the log: 8

## Visible match rows
| Date | Result | Opponent | Tournament | Category | Round | Surface | Score | Match URL |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2002-08-26 | L | Martin Lee | US Open | Grand Slam | Q1 | Hard | 3-6 1-6 | https://tennis-db.com/matches/sackmann_atp:2c4843a1fe772b6374f30893c28718e7562727496c16800b83eb6465f6edc987/martin-lee-vs-jan-siemerink |
| 2002-07-18 | L | Kristian Pless | Amersfoort | ATP 250 | R32 | Clay | 2-6 6-7(1) | https://tennis-db.com/matches/sackmann_atp:cc6820f8a97684ead69af63d7a786405b6f2a2a06e25c9f99add711a4a472ee6/kristian-pless-vs-jan-siemerink |
| 2002-05-28 | L | Oleg Ogorodov | Roland Garros | Grand Slam | Q3 | Clay | 3-6 5-7 | https://tennis-db.com/matches/sackmann_atp:cabee715fecd0b9d9cfa0476e67b0516b690375ad2b369e6193bbe58e5a86646/oleg-ogorodov-vs-jan-siemerink |
| 2002-05-28 | W | Edwin Kempes | Roland Garros | Grand Slam | Q2 | Clay | 6-4 6-2 | https://tennis-db.com/matches/sackmann_atp:93940f9ef853da16f3f2e7aba7e54a9ed3b8691de705351b18d310e08f43131a/jan-siemerink-vs-edwin-kempes |
| 2002-05-27 | W | Dennis van Scheppingen | Roland Garros | Grand Slam | Q1 | Clay | 6-2 7-6(6) | https://tennis-db.com/matches/sackmann_atp:f8e0a275d2832d5fc6a5b646318df5ea53c3713ce939b74a48188cad73a92db0/jan-siemerink-vs-dennis-van-scheppingen |
| 2002-02-21 | L | Ivan Ljubicic | Rotterdam | ATP 250 | R32 | Hard | 7-6(6) 6-7(6) 6-7(7) | https://tennis-db.com/matches/sackmann_atp:97e7cf75ca41825c04819a24577e2093dc4275c3fff9702905248cfe52c9d605/ivan-ljubicic-vs-jan-siemerink |
| 2001-09-13 | L | Taylor Dent | Tashkent | ATP 250 | R32 | Hard | 6-7(8) 5-7 | https://tennis-db.com/matches/sackmann_atp:a64f21b3108c35880dbe9595ae1b02302e93da5187c153a18aa27626cfbe9495/taylor-dent-vs-jan-siemerink |
| 2001-08-31 | L | Arnaud Clement | US Open | Grand Slam | R64 | Hard | 7-6(4) 4-6 6-7(1) 1-6 | https://tennis-db.com/matches/sackmann_atp:f3b543cd2a21839e45be18bec4a045f7afe4adf450c0c443931ffd6ae2a12dc3/arnaud-clement-vs-jan-siemerink |
| 2001-08-29 | W | Jiri Vanek | US Open | Grand Slam | R128 | Hard | 7-6(5) 4-6 6-0 6-4 | https://tennis-db.com/matches/sackmann_atp:dd897390f74eba4c0a3425aff7c0e8790c64692cd20565ce784cca954682da2e/jan-siemerink-vs-jiri-vanek |
| 2001-07-25 | L | Stefan Koubek | Kitzbuhel | ATP 250 | R64 | Clay | 5-7 0-6 | https://tennis-db.com/matches/sackmann_atp:0b2d1cadd2c68a7f28e3d641836fdc2d1fcdaec1d6b9452f67c5defa32ff7b51/stefan-koubek-vs-jan-siemerink |
| 2001-07-20 | L | Sjeng Schalken | Amsterdam | ATP 250 | R16 | Clay | 6-3 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:e51e87313467d44d8908d7b26adb7bc1bc059d5b1c842d2d3368765af503a059/sjeng-schalken-vs-jan-siemerink |
| 2001-07-19 | W | Andre Sa | Amsterdam | ATP 250 | R32 | Clay | 6-7(5) 7-6(8) 6-4 | https://tennis-db.com/matches/sackmann_atp:b5d1ef99fddf2e3b17f033cf34d1fd39fe25f1d4121b2a2b1bd6288294f91fda/jan-siemerink-vs-andre-sa |
| 2001-07-12 | L | Jeff Salzenstein | Newport | ATP 250 | R32 | Grass | 2-6 7-6(1) 1-6 | https://tennis-db.com/matches/sackmann_atp:dd089168139c46ede7eaf642a099fd2624fb25b8268f6c6c0d296ed7b3944d73/jeff-salzenstein-vs-jan-siemerink |
| 2001-06-27 | L | Kristian Pless | Wimbledon | Grand Slam | R128 | Grass | 6-7(5) 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:f5209ae5772c94cadb8df5fc5eb6f42f4bd99be4b796f13ab81d4420f4945336/kristian-pless-vs-jan-siemerink |
| 2001-06-21 | L | Sjeng Schalken | S Hertogenbosch | ATP 250 | R32 | Grass | 3-6 4-6 | https://tennis-db.com/matches/sackmann_atp:2fbb2e96ba8d33a56059c9ac60d54d3f392aaca3bc809630e0e024dcf99a8d9e/sjeng-schalken-vs-jan-siemerink |
| 2001-06-15 | L | Pete Sampras | Queen's Club | ATP 250 | R16 | Grass | 3-6 4-6 | https://tennis-db.com/matches/sackmann_atp:d7e87430623cd882950eb91386279e92021b2ff89a0e3bec8db73657efe792f2/pete-sampras-vs-jan-siemerink |
| 2001-06-14 | W | Gianluca Pozzi | Queen's Club | ATP 250 | R32 | Grass | 3-6 6-3 7-5 | https://tennis-db.com/matches/sackmann_atp:ae05fd25115291e6fcdc141e53c72cbfef10c9142636059e9812b77db9a5640d/jan-siemerink-vs-gianluca-pozzi |
| 2001-06-13 | W | Davide Sanguinetti | Queen's Club | ATP 250 | R64 | Grass | 6-3 7-6(3) | https://tennis-db.com/matches/sackmann_atp:ef441ef24f7f597d8143dd9326d252b841d15b88cafc5c4f33d73e34782b6272/jan-siemerink-vs-davide-sanguinetti |
| 2001-05-30 | L | Franco Squillari | Roland Garros | Grand Slam | R128 | Clay | 4-6 2-6 1-6 | https://tennis-db.com/matches/sackmann_atp:a30247c91a257e738217ff44a6e835dbaf307d538d7c093b10c84aad56a9226d/franco-squillari-vs-jan-siemerink |
| 2001-05-26 | L | Andrea Gaudenzi | St. Poelten | ATP 250 | QF | Clay | 6-7(4) 3-6 | https://tennis-db.com/matches/sackmann_atp:0eddfe6cd902f5a8e7561a341557400649b5ea72d73fc38a47680000b35b1805/andrea-gaudenzi-vs-jan-siemerink |
| 2001-05-25 | W | Alex Calatrava | St. Poelten | ATP 250 | R16 | Clay | 7-5 3-6 6-2 | https://tennis-db.com/matches/sackmann_atp:655b19527a48c6c8972c158a1a50edf9c4e2d744e8264c685926dda25e1a91de/jan-siemerink-vs-alex-calatrava |
| 2001-05-24 | W | Hugo Armando | St. Poelten | ATP 250 | R32 | Clay | 7-6(3) 6-3 | https://tennis-db.com/matches/sackmann_atp:3c60ce9c100aba169747fb706d443ce3660e1d9b84efb9ffafcd12a9af20c888/jan-siemerink-vs-hugo-armando |
| 2001-05-03 | L | Magnus Larsson | Houston | ATP 250 | R32 | Clay | 7-5 1-6 6-7(11) | https://tennis-db.com/matches/sackmann_atp:25c37e2be0c0dd609cb8b6913b4eee1ab399b971081703eb7f6d6fe9b8e063ee/magnus-larsson-vs-jan-siemerink |
| 2001-04-26 | L | Lars Burgsmuller | Atlanta | ATP 250 | R32 | Clay | 4-6 3-6 | https://tennis-db.com/matches/sackmann_atp:5dd4901f3d7c265d623e853f8bfde1166f9753c61c449698d0333fd0d7eebd52/lars-burgsmuller-vs-jan-siemerink |
| 2001-04-13 | L | Dominik Hrbaty | Estoril | ATP 250 | R16 | Clay | 1-6 3-6 | https://tennis-db.com/matches/sackmann_atp:ec0c77b7995df9ea99bbaaf3a3e9b59b2573bc8d27d377c0c3a11f2c47ad5bca/dominik-hrbaty-vs-jan-siemerink |
| 2001-04-12 | W | Tiago Sousa | Estoril | ATP 250 | R32 | Clay | 7-5 6-4 | https://tennis-db.com/matches/sackmann_atp:879c3c65106100692aa37cc0a990f913c0b1b6f8e3e409ff47afa7b36e558e0c/jan-siemerink-vs-tiago-sousa |
| 2001-03-21 | L | Gaston Gaudio | Miami Masters | Masters 1000 | R64 | Hard | 6-7(5) 2-6 | https://tennis-db.com/matches/sackmann_atp:7921acc2b5ee216c5e866be56a5a5224aca6c8bdc71ed1adc44587e32b3cceff/gaston-gaudio-vs-jan-siemerink |
| 2001-03-20 | W | Julien Boutter | Miami Masters | Masters 1000 | R128 | Hard | 7-5 6-2 | https://tennis-db.com/matches/sackmann_atp:5286068d2871dcf24dfb086545a761df3e3f3100829b2be4f24604f8a67ff844/jan-siemerink-vs-julien-boutter |
| 2001-02-22 | L | Alex Corretja | Rotterdam | ATP 250 | R32 | Hard | 6-4 6-7(4) 6-7(6) | https://tennis-db.com/matches/sackmann_atp:db8800cd30981dcb4199d0b6bffcffc44d397fd88ab41d62f438c246b2a5e9b5/alex-corretja-vs-jan-siemerink |
| 2001-02-17 | L | Tim Henman | Copenhagen | ATP 250 | SF | Hard | 4-6 6-7(3) | https://tennis-db.com/matches/sackmann_atp:72c2b7ef0830a44a501160dba4e81d8ba3d35ee9ce92ee6d54da510bde1a6d11/tim-henman-vs-jan-siemerink |
| 2001-02-17 | W | Cecil Mamiit | Copenhagen | ATP 250 | QF | Hard | 6-4 6-7(6) 6-3 | https://tennis-db.com/matches/sackmann_atp:18f692cec36ddce56a0773b9d93d01a58407e5424b0f8914ff1fc654923688b4/jan-siemerink-vs-cecil-mamiit |
| 2001-02-16 | W | Rainer Schuettler | Copenhagen | ATP 250 | R16 | Hard | 6-4 1-6 6-2 | https://tennis-db.com/matches/sackmann_atp:83a77e2e05b90f4e6ce5a4493f01f08bdd0ad5514ff9d6a9af11c19748156fb5/jan-siemerink-vs-rainer-schuettler |
| 2001-02-15 | W | Raemon Sluiter | Copenhagen | ATP 250 | R32 | Hard | 7-6(4) RET | https://tennis-db.com/matches/sackmann_atp:b602bedc0836ef19fdb0c92cbac9fdad69373cf73983604bb3580da5f47185d1/jan-siemerink-vs-raemon-sluiter |
| 2001-01-19 | L | Sebastien Grosjean | Australian Open | Grand Slam | R64 | Hard | 3-6 0-6 4-6 | https://tennis-db.com/matches/sackmann_atp:b49da1d73736ec21b752e7381e55ab1164df2fc0aaef47d144e59767b68a0038/sebastien-grosjean-vs-jan-siemerink |
| 2001-01-17 | W | Sjeng Schalken | Australian Open | Grand Slam | R128 | Hard | 2-6 6-3 6-4 3-6 6-3 | https://tennis-db.com/matches/sackmann_atp:4b39c68d2fc6e8869ace712cdab7849d4ea36e7d172c2c50ec5990bd174fc99e/jan-siemerink-vs-sjeng-schalken |
| 2000-09-14 | L | Justin Gimelstob | Tashkent | ATP 250 | R32 | Hard | 4-6 3-6 | https://tennis-db.com/matches/sackmann_atp:c4a14529295670287c93438998b7e65262996305063ec1d869358ece6ae35bbd/justin-gimelstob-vs-jan-siemerink |
| 2000-08-30 | L | Jason Stoltenberg | US Open | Grand Slam | R128 | Hard | 0-6 4-6 1-6 | https://tennis-db.com/matches/sackmann_atp:d00c84d5603c89bd81b6266b21c93d7d5433cc5de9fbdfec3395a83ffd4e63b6/jason-stoltenberg-vs-jan-siemerink |
| 2000-08-29 | W | Michael Sell | US Open | Grand Slam | Q3 | Hard | 7-6(5) 6-3 | https://tennis-db.com/matches/sackmann_atp:175c3712ded5ccda7fddbf1c01c704eff28f33819f8e681f1fabe69776791381/jan-siemerink-vs-michael-sell |
| 2000-08-29 | W | Bjorn Phau | US Open | Grand Slam | Q2 | Hard | 5-7 6-0 6-3 | https://tennis-db.com/matches/sackmann_atp:dc36b3433413a3aa90cf9fa68ce07da3cf5a8bc0dbc69c0cc58b6dde1df81ab5/jan-siemerink-vs-bjorn-phau |
| 2000-08-28 | W | Olivier Patience | US Open | Grand Slam | Q1 | Hard | 7-6(3) 6-4 | https://tennis-db.com/matches/sackmann_atp:9dc34866eee9dba3a2b4016b36a98709ab9e478d99ac7442b79095c43816383c/jan-siemerink-vs-olivier-patience |
| 2000-08-14 | L | Todd Woodbridge | Indianapolis | ATP 250 | R64 | Hard | 3-6 1-6 | https://tennis-db.com/matches/sackmann_atp:7589bd3715117c5a1ae7b4a0afd90fb233a61795ba43c16218819047c905a59a/todd-woodbridge-vs-jan-siemerink |
| 2000-07-29 | L | Andrei Medvedev | San Marino | ATP 250 | QF | Clay | 4-6 5-7 | https://tennis-db.com/matches/sackmann_atp:b8f1704e59acab9a9cad532df4a4517acab858e77f50a8cab0389b3a0b653ee3/andrei-medvedev-vs-jan-siemerink |
| 2000-07-28 | W | Andrei Stoliarov | San Marino | ATP 250 | R16 | Clay | 6-3 6-2 | https://tennis-db.com/matches/sackmann_atp:39cad35b1caf3e33bc7414c9e571857b02db5739f5a2b94d493a533100570792/jan-siemerink-vs-andrei-stoliarov |
| 2000-07-27 | W | Fredrik Jonsson | San Marino | ATP 250 | R32 | Clay | 6-3 6-2 | https://tennis-db.com/matches/sackmann_atp:72355da333353983ec63bdece593a7948a7d4e0e6d8518141bdd51d282e6a6c9/jan-siemerink-vs-fredrik-jonsson |
| 2000-07-21 | L | Nikolay Davydenko | Amsterdam | ATP 250 | R16 | Clay | 3-6 6-3 1-6 | https://tennis-db.com/matches/sackmann_atp:9a94fdf69b70efc67437a18c219c7feb37267af871ce8d32fbf4e5e9a659cfd7/nikolay-davydenko-vs-jan-siemerink |
| 2000-07-20 | W | Emilio Benfele Alvarez | Amsterdam | ATP 250 | R32 | Clay | 7-6(4) 6-4 | https://tennis-db.com/matches/sackmann_atp:fa27fd212eac52da2d38877f177ca97801f46bcd993b75026d9033cbf83906a3/jan-siemerink-vs-emilio-benfele-alvarez |
| 2000-06-28 | L | Todd Woodbridge | Wimbledon | Grand Slam | R128 | Grass | 4-6 6-3 6-7(4) 2-6 | https://tennis-db.com/matches/sackmann_atp:0d1b574e7fcd9453db07a64dd0c0b5050104512c546838b6cf44685ded9ec1ab/todd-woodbridge-vs-jan-siemerink |
| 2000-06-23 | L | Magnus Gustafsson | S Hertogenbosch | ATP 250 | R16 | Grass | 6-1 5-7 5-7 | https://tennis-db.com/matches/sackmann_atp:5221f9a88515362c07768da49ac01fdd93f0390717be267af10e0b841ff4c010/magnus-gustafsson-vs-jan-siemerink |
| 2000-06-22 | W | Thomas Johansson | S Hertogenbosch | ATP 250 | R32 | Grass | 2-6 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:d3907a873f865440c3ab7afc33b94997ada0f90c5d2654c3a1ff8d76c413022d/jan-siemerink-vs-thomas-johansson |
| 2000-06-14 | L | Gianluca Pozzi | Queen's Club | ATP 250 | R64 | Grass | 3-6 6-4 1-6 | https://tennis-db.com/matches/sackmann_atp:a273de97751f46b0ed618e4ce3d84977d7ead29f8fc16c51804d06f5f3335e4e/gianluca-pozzi-vs-jan-siemerink |
| 2000-05-29 | L | Oscar Serrano | Roland Garros | Grand Slam | Q1 | Clay | 4-6 6-4 6-8 | https://tennis-db.com/matches/sackmann_atp:1f3a5c54de77fbd9a74de7911ccf5aed816d32a968161dc2cef057a0c5391996/oscar-serrano-vs-jan-siemerink |
| 2000-05-05 | L | Paradorn Srichaphan | Orlando | ATP 250 | R16 | Clay | 5-7 3-6 | https://tennis-db.com/matches/sackmann_atp:85b362c4f5fbce35f8668e3d567b5fc45f641d74c4bd52d4eb4367df47f7d7e4/paradorn-srichaphan-vs-jan-siemerink |
| 2000-05-04 | W | Justin Gimelstob | Orlando | ATP 250 | R32 | Clay | 4-6 6-2 7-5 | https://tennis-db.com/matches/sackmann_atp:5ba70a8d299f36c5828a4df8b55e04f3f3dd56a8ecf90bcb78318022fd6cf4fe/jan-siemerink-vs-justin-gimelstob |
| 2000-03-02 | L | Gianluca Pozzi | Copenhagen | ATP 250 | R32 | Hard | 6-2 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:1548a650e247f6b50500df45183bb1fbcc875eae37181af9552801c447dd9280/gianluca-pozzi-vs-jan-siemerink |
| 2000-02-18 | L | Jerome Golmard | Rotterdam | ATP 250 | R16 | Hard | 4-6 6-7(4) | https://tennis-db.com/matches/sackmann_atp:e0b2f9e71e60ce3e68116705406356953de2bef2ba434aaa67cbdd1a48dfd305/jerome-golmard-vs-jan-siemerink |
| 2000-02-17 | W | Thomas Enqvist | Rotterdam | ATP 250 | R32 | Hard | 6-3 7-6(5) | https://tennis-db.com/matches/sackmann_atp:0c6b0e1090bd57f667c13cd4e70b83a5750d5fde5e1999016ef3525134640119/jan-siemerink-vs-thomas-enqvist |
| 2000-02-11 | L | Fabrice Santoro | Marseille | ATP 250 | R16 | Hard | 4-6 6-1 2-6 | https://tennis-db.com/matches/sackmann_atp:bcb4853fae44fbbace602f23813557db519b44ece49a53170737cb03eff44917/fabrice-santoro-vs-jan-siemerink |
| 2000-02-10 | W | Guillaume Raoux | Marseille | ATP 250 | R32 | Hard | 7-6(4) 2-6 7-6(6) | https://tennis-db.com/matches/sackmann_atp:5fa847ec8bd9269ed87d86ba01155a812661df1d18ce7b5907ffe85d3df387db/jan-siemerink-vs-guillaume-raoux |
| 2000-01-19 | L | Todd Woodbridge | Australian Open | Grand Slam | R128 | Hard | 4-6 1-6 3-6 | https://tennis-db.com/matches/sackmann_atp:8c074b62a37f48337125f7588fa51cce2d4a739c9f33839f3ef8eabc9b0f18c1/todd-woodbridge-vs-jan-siemerink |
| 2000-01-06 | L | Franco Squillari | Doha | ATP 250 | R32 | Hard | 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:e703a17872de22a0b5734909981a7353b17e757f3905377f99de05fbe77ff3c5/franco-squillari-vs-jan-siemerink |
| 1999-11-11 | L | Jan Kroslak | Moscow | ATP 250 | R32 | Carpet | 7-5 6-7(3) 6-7(3) | https://tennis-db.com/matches/sackmann_atp:114cf6ce95a0f61f2e07f91ec1b2658c41e6dd9f00669608c691c5c353b62361/jan-kroslak-vs-jan-siemerink |
| 1999-10-21 | L | Nicolas Lapentti | Lyon | ATP 250 | R32 | Carpet | 6-3 3-6 6-7(4) | https://tennis-db.com/matches/sackmann_atp:d9fb90d905a9c89c022aad6dde13b5d2bde5d0a5991858cce49f279daad84420/nicolas-lapentti-vs-jan-siemerink |
| 1999-10-20 | W | Hicham Arazi | Lyon | ATP 250 | R64 | Carpet | 6-3 7-6(4) | https://tennis-db.com/matches/sackmann_atp:addc0c9a43e1edb23c11a4704e71723206a1608c31d54fea260f8c6798133826/jan-siemerink-vs-hicham-arazi |
| 1999-10-15 | L | Yevgeny Kafelnikov | Vienna | ATP 250 | R16 | Hard | W/O | https://tennis-db.com/matches/sackmann_atp:02059b10d1301fde92e4108a0a08ff8b3bd70bc67381dcc3534b78e018e6ee34/yevgeny-kafelnikov-vs-jan-siemerink |
| 1999-10-14 | W | Arnaud Clement | Vienna | ATP 250 | R32 | Hard | 5-7 7-6(5) 7-6(6) | https://tennis-db.com/matches/sackmann_atp:ffb65f19a19fff90786c7b346bc18674dd0c9ea6ab8c9f27f7425dae10b8245d/jan-siemerink-vs-arnaud-clement |
| 1999-10-07 | L | Andre Agassi | Basel | ATP 250 | R32 | Carpet | 3-6 4-6 | https://tennis-db.com/matches/sackmann_atp:cca0afa49d33c324420eb408cfe6c273bb747afd39d162ed8c4fdc3df24708dc/andre-agassi-vs-jan-siemerink |
| 1999-09-30 | L | Thomas Johansson | Toulouse | ATP 250 | R32 | Hard | 6-7(3) 1-6 | https://tennis-db.com/matches/sackmann_atp:e01113a157edbfda4fe5091701b03e3cf78f008f09c5f6093d08208c9884a166/thomas-johansson-vs-jan-siemerink |
| 1999-09-01 | L | Lars Burgsmuller | US Open | Grand Slam | R128 | Hard | 1-6 7-6(8) 6-3 3-6 2-6 | https://tennis-db.com/matches/sackmann_atp:ce64aec28ebeb2ac2476914988b5d925c37338d46ceff60f6e079a87aab6c5bc/lars-burgsmuller-vs-jan-siemerink |
| 1999-08-26 | L | Christian Ruud | Long Island | ATP 250 | R32 | Hard | 3-6 3-6 | https://tennis-db.com/matches/sackmann_atp:722561edf74f4a01c89330bd19cb6b524569cb4903aab0fa29acc42184142bde/christian-ruud-vs-jan-siemerink |
| 1999-08-16 | L | Nicolas Lapentti | Indianapolis | ATP 250 | SF | Hard | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:a855f13e6a416e9c860edbdde95d52831d8508df7b4d7272236da20e22f8453b/nicolas-lapentti-vs-jan-siemerink |
| 1999-08-16 | W | Patrick Rafter | Indianapolis | ATP 250 | QF | Hard | W/O | https://tennis-db.com/matches/sackmann_atp:79271b1a2eb73197e8b58278d99cfe591d46de6b806f5d7f25ddc4ab146ecf2f/jan-siemerink-vs-patrick-rafter |
| 1999-08-16 | W | Magnus Larsson | Indianapolis | ATP 250 | R16 | Hard | 6-2 6-3 | https://tennis-db.com/matches/sackmann_atp:bc3bfa21e7430e2f53c2c3f80be1d942816cc808518cfa1e20d2db687a30aa5f/jan-siemerink-vs-magnus-larsson |
| 1999-08-16 | W | Tommy Haas | Indianapolis | ATP 250 | R32 | Hard | 6-3 7-5 | https://tennis-db.com/matches/sackmann_atp:73a7e5b61ba46955b8b80c0ccc08c3141000d569d9c7c1df14c958f152262464/jan-siemerink-vs-tommy-haas |
| 1999-08-16 | W | Markus Hipfl | Indianapolis | ATP 250 | R64 | Hard | 4-6 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:c4f18f37cf0dd4d5f2c952aca3456f4c8afba25483d59e5de0ee4f20b8793717/jan-siemerink-vs-markus-hipfl |
| 1999-08-12 | L | Pete Sampras | Cincinnati Masters | Masters 1000 | R32 | Hard | 6-7(9) 4-6 | https://tennis-db.com/matches/sackmann_atp:a38e0d2f19bf4ef4b566ec907dc6537e959f83530fab1c19a04d8698d4e6288c/pete-sampras-vs-jan-siemerink |
| 1999-08-11 | W | Jan Kroslak | Cincinnati Masters | Masters 1000 | R64 | Hard | 6-1 6-2 | https://tennis-db.com/matches/sackmann_atp:c185d0ea04dd8e7e27f9a57403a0d688b72d307a1194263310206d9a9b7f542f/jan-siemerink-vs-jan-kroslak |
| 1999-08-05 | L | Vincent Spadea | Canada Masters | Masters 1000 | R32 | Hard | 2-6 2-6 | https://tennis-db.com/matches/sackmann_atp:f4e60d361a7d5b3888ec3dabfc7649ad8c203990013a9864b991b3e3d169f2eb/vincent-spadea-vs-jan-siemerink |
| 1999-08-04 | W | Bobby Kokavec | Canada Masters | Masters 1000 | R64 | Hard | 6-2 6-4 | https://tennis-db.com/matches/sackmann_atp:718623d747a93bf2540231af1d84b9f68204138c94e0b39337004d11fb9a765a/jan-siemerink-vs-bobby-kokavec |
| 1999-06-23 | L | Paul Goldstein | Wimbledon | Grand Slam | R128 | Grass | 4-6 7-5 6-4 2-6 1-6 | https://tennis-db.com/matches/sackmann_atp:65f78d6c6c547b6022654128f54766b65eec1fff35c7e3a627e3fca095f9e047/paul-goldstein-vs-jan-siemerink |
| 1999-06-17 | L | John Van Lottum | S Hertogenbosch | ATP 250 | R32 | Grass | 4-6 6-4 3-6 | https://tennis-db.com/matches/sackmann_atp:dac8cd27e5e553f5393cd1864b1c3f1430285f49eceef65986cb3c7c22102109/john-van-lottum-vs-jan-siemerink |
| 1999-06-12 | L | Nicolas Kiefer | Halle | ATP 250 | QF | Grass | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:b1a054abda96d2cc692e9310402bf9400bde0e2502131fab31fa813e2d548100/nicolas-kiefer-vs-jan-siemerink |
| 1999-06-11 | W | Patrick Rafter | Halle | ATP 250 | R16 | Grass | 6-4 3-6 7-6(17) | https://tennis-db.com/matches/sackmann_atp:3c2760c0a1c92072d5c6e1585d91bfed8ab5f67afa01b4f0f0b8508c8bd1c8a9/jan-siemerink-vs-patrick-rafter |
| 1999-06-10 | W | Paul Haarhuis | Halle | ATP 250 | R32 | Grass | 4-6 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:495f609e6c27bb4586cfecf37081cbe7e0e06b5ae44bb8fb7748a0ada1d92214/jan-siemerink-vs-paul-haarhuis |
| 1999-05-26 | L | Guillermo Canas | Roland Garros | Grand Slam | R128 | Clay | 6-7(2) 6-4 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:12f2ba4d178a2ffea9d12484b9c5290651f97c58c314e2dea16ea418ed8195e0/guillermo-canas-vs-jan-siemerink |
| 1999-05-13 | L | Tim Henman | Rome Masters | Masters 1000 | R32 | Clay | 5-7 5-7 | https://tennis-db.com/matches/sackmann_atp:9e652ca757f6ff8ce4052749bd48c433c23b7233a188eab6cf8a59cd9845b1a0/tim-henman-vs-jan-siemerink |
| 1999-05-12 | W | Andrew Ilie | Rome Masters | Masters 1000 | R64 | Clay | 6-3 7-5 | https://tennis-db.com/matches/sackmann_atp:b370ad724e2dade70f97e0d06865d91916da1c650824d3ea651ef3f353f03b52/jan-siemerink-vs-andrew-ilie |
| 1999-04-29 | L | Arnaud Clement | Munich | ATP 250 | R32 | Clay | 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:5fc39c01838b590f0f4d9a44dc933738b6a4e52e1fc12f366546f877008cc8ab/arnaud-clement-vs-jan-siemerink |
| 1999-04-21 | L | John Van Lottum | Monte Carlo Masters | Masters 1000 | R64 | Clay | 7-5 1-6 4-6 | https://tennis-db.com/matches/sackmann_atp:94182f5eb47aa2adef4f9b1447bf810536a365a799f287852bd73a56d830cfb5/john-van-lottum-vs-jan-siemerink |
| 1999-03-18 | L | Richard Krajicek | Miami Masters | Masters 1000 | R32 | Hard | 3-6 2-6 | https://tennis-db.com/matches/sackmann_atp:3e48976992bff51b775bc776ae855db8c275127cd4b19301a30aa69580ed5c17/richard-krajicek-vs-jan-siemerink |
| 1999-03-17 | W | Alex Obrien | Miami Masters | Masters 1000 | R64 | Hard | 7-5 7-5 | https://tennis-db.com/matches/sackmann_atp:298c27d112298f0dd23a8c771917cc73e87babb15e4b63f1fae6d5697c465938/jan-siemerink-vs-alex-obrien |
| 1999-03-13 | L | Richard Krajicek | Indian Wells Masters | Masters 1000 | R16 | Hard | 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:414f174d495e7885e98312aeb1cd0559534cb7f5ec48c39a0e4e5c2bdda1faad/richard-krajicek-vs-jan-siemerink |
| 1999-03-11 | W | Fernando Meligeni | Indian Wells Masters | Masters 1000 | R32 | Hard | 6-4 2-6 6-4 | https://tennis-db.com/matches/sackmann_atp:69ac3d9eee3b7204c2e5b3e46475c1e3624c3041906e5d2fc720e46dd8a828d4/jan-siemerink-vs-fernando-meligeni |
| 1999-03-10 | W | Michael Chang | Indian Wells Masters | Masters 1000 | R64 | Hard | 7-5 6-3 | https://tennis-db.com/matches/sackmann_atp:2110477dd41bf6f14550b9957ffc83b362be757bfd1a05a52728626d4a4e089b/jan-siemerink-vs-michael-chang |
| 1999-02-25 | L | Goran Ivanisevic | London | ATP 250 | R32 | Carpet | 3-6 6-0 6-7(1) | https://tennis-db.com/matches/sackmann_atp:f8136de6bdbb0158aa0e4db3271af7f4377f77849f017956c108c6ca4b42b10c/goran-ivanisevic-vs-jan-siemerink |
| 1999-02-18 | L | Fabrice Santoro | Rotterdam | ATP 250 | R32 | Carpet | 6-7(6) 3-6 | https://tennis-db.com/matches/sackmann_atp:032a7903ff03eb04f2237e1ff697e9ac74a09c264f0734f4c79d1a23bba93f25/fabrice-santoro-vs-jan-siemerink |
| 1999-02-13 | L | David Prinosil | St. Petersburg | ATP 250 | SF | Carpet | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:79ecc05d13daea895f70007f40e4d245d81b06c737d664e9dd01e8265d5e23a8/david-prinosil-vs-jan-siemerink |
| 1999-02-13 | W | Igor Kornienko | St. Petersburg | ATP 250 | QF | Carpet | 6-7(0) 7-6(4) 6-3 | https://tennis-db.com/matches/sackmann_atp:2e9cdc8d489d61f54ed7f28b1f19ea1f1533855c3cdb22d31f55f09789dc9c58/jan-siemerink-vs-igor-kornienko |
| 1999-02-12 | W | Fredrik Jonsson | St. Petersburg | ATP 250 | R16 | Carpet | 7-6(2) 6-2 | https://tennis-db.com/matches/sackmann_atp:dd6da8d50d96574cd60770f07d32f6445910157af32a390366b2b4bc3fb33653/jan-siemerink-vs-fredrik-jonsson |
| 1999-02-11 | W | Michael Kohlmann | St. Petersburg | ATP 250 | R32 | Carpet | 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:796b07eda209bcc95500edbb17e286dcc133af2c24bce16d1e86030a4444d5a5/jan-siemerink-vs-michael-kohlmann |
| 1999-01-20 | L | Sargis Sargsian | Australian Open | Grand Slam | R128 | Hard | 4-6 6-3 2-6 3-6 | https://tennis-db.com/matches/sackmann_atp:a440c523fb1086b2839626240c74314fd1e701a42287c2755bb9499b9af97831/sargis-sargsian-vs-jan-siemerink |
| 1999-01-14 | L | Mariano Puerta | Sydney | ATP 250 | R32 | Hard | 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:8c79ae83d2b6502860fe1e86cf230642f2d2bfa28b15acf79355f8ede5b86e2d/mariano-puerta-vs-jan-siemerink |
| 1999-01-07 | L | Jeff Tarango | Doha | ATP 250 | R32 | Hard | 3-6 3-6 | https://tennis-db.com/matches/sackmann_atp:c6ba9e3395879bd94a5f8893f6a532b3ddf68cee5bfa8c5e9e513b77cfe5a4c4/jeff-tarango-vs-jan-siemerink |
| 1998-11-05 | L | Vincent Spadea | Paris Masters | Masters 1000 | R32 | Carpet | 6-7(3) 6-3 6-7(4) | https://tennis-db.com/matches/sackmann_atp:1c2adddcf77a410ce89d325c36c068577b461a17b439ce79d5b17d66e96b60fc/vincent-spadea-vs-jan-siemerink |
| 1998-10-31 | L | Marcelo Rios | Stuttgart Masters | Masters 1000 | R16 | Hard | 2-6 RET | https://tennis-db.com/matches/sackmann_atp:eff73684bc4689f4e5c489fa83bc2018fa194848988b60bb32aa31d34dc4fbca/marcelo-rios-vs-jan-siemerink |
| 1998-10-29 | W | Guillaume Raoux | Stuttgart Masters | Masters 1000 | R32 | Hard | 6-7(3) 7-6(5) 6-3 | https://tennis-db.com/matches/sackmann_atp:f1c183ba15d09d01f7e66d3c42a4b702726ad9a8941552b46be5c7ae4b40f556/jan-siemerink-vs-guillaume-raoux |
| 1998-10-22 | L | Gianluca Pozzi | Lyon | ATP 250 | R32 | Carpet | 6-2 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:e826563b1789e6252bad3285b417a2a850b525476abde74c377ea58175a3bb70/gianluca-pozzi-vs-jan-siemerink |
| 1998-10-15 | L | Thomas Muster | Vienna | ATP 250 | R32 | Carpet | 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:86a625ebda4a449cd1a6fd749d9cd010c92a7418c728c5e943a32eb7e26297a8/thomas-muster-vs-jan-siemerink |
| 1998-10-08 | L | Byron Black | Basel | ATP 250 | R32 | Hard | 2-6 2-6 | https://tennis-db.com/matches/sackmann_atp:04287bcf7fd7b17def1befb17862e3fba715822d6d6c73394b096def6cbafe54/byron-black-vs-jan-siemerink |
| 1998-10-04 | W | Greg Rusedski | Toulouse | ATP 250 | F | Hard | 6-4 6-4 | https://tennis-db.com/matches/sackmann_atp:0784a1b5b3680b1ad626f611fb5ba98650fb91bf3eb983460f48cc0adbe34bc0/jan-siemerink-vs-greg-rusedski |
| 1998-10-03 | W | Thomas Johansson | Toulouse | ATP 250 | SF | Hard | 6-3 3-6 7-5 | https://tennis-db.com/matches/sackmann_atp:1968c21546f9695378bd19809b92c4424c7c9f28f0f5976c76e6eed374077b4b/jan-siemerink-vs-thomas-johansson |
| 1998-10-03 | W | Roger Federer | Toulouse | ATP 250 | QF | Hard | 7-6(5) 6-2 | https://tennis-db.com/matches/sackmann_atp:d22cca9c76aece19d8060203c089dc6e9d607f73f9e2d098a39700170204281c/jan-siemerink-vs-roger-federer |
| 1998-10-02 | W | Jerome Golmard | Toulouse | ATP 250 | R16 | Hard | 3-6 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:7b28fac10576e72110fd41c784a5481fc488b3ffa75e920397b6cf65c428f0f8/jan-siemerink-vs-jerome-golmard |
| 1998-10-01 | W | Guillermo Canas | Toulouse | ATP 250 | R32 | Hard | 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:4bfc6b0827cbb36b8a1ebf09fc5f8eebaa48598bff6497c0eaed1341b2cfb402/jan-siemerink-vs-guillermo-canas |
| 1998-09-09 | L | Jonas Bjorkman | US Open | Grand Slam | R16 | Hard | 4-6 6-2 2-6 2-6 | https://tennis-db.com/matches/sackmann_atp:64052e3c4ebc09dc9da2df84307daacc2f46f3501ab4013450f99a05b2a385ea/jonas-bjorkman-vs-jan-siemerink |
| 1998-09-06 | W | Greg Rusedski | US Open | Grand Slam | R32 | Hard | 1-6 6-4 5-7 6-2 6-4 | https://tennis-db.com/matches/sackmann_atp:097eece0ba710df310531cb615560b9e86f07fbac11db4a6bc86ca96155e2d0d/jan-siemerink-vs-greg-rusedski |
| 1998-09-04 | W | Dominik Hrbaty | US Open | Grand Slam | R64 | Hard | 6-4 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:d2c5c8c6c0831f1c84ea08f5b2b64959c021d9b7a3036d7f99eedb78ac852379/jan-siemerink-vs-dominik-hrbaty |
| 1998-09-02 | W | Dinu Pescariu | US Open | Grand Slam | R128 | Hard | 6-4 6-3 6-0 | https://tennis-db.com/matches/sackmann_atp:1e5359086f74fb02701eaec67abcba259a446cf7e5dc2a710438b6930c84178c/jan-siemerink-vs-dinu-pescariu |
| 1998-08-28 | L | Daniel Vacek | Long Island | ATP 250 | R16 | Hard | 1-6 6-4 3-6 | https://tennis-db.com/matches/sackmann_atp:b65a68377420ffbf4b79e4af15533a90b16710c97791d078cf87842f58c1e47e/daniel-vacek-vs-jan-siemerink |
| 1998-08-27 | W | Julian Alonso | Long Island | ATP 250 | R32 | Hard | 4-6 6-1 6-4 | https://tennis-db.com/matches/sackmann_atp:13ee17870d547eb2efcab904a66fab77353c9618369fe27ecc0652f83ce2b392/jan-siemerink-vs-julian-alonso |
| 1998-08-21 | L | Karol Kucera | New Haven | ATP 250 | R16 | Hard | 4-6 5-7 | https://tennis-db.com/matches/sackmann_atp:c6c46a10ab67d08313e99bc230947d41e2b2f49941afcd7c2991a73b59dccbe9/karol-kucera-vs-jan-siemerink |
| 1998-08-20 | W | Dennis van Scheppingen | New Haven | ATP 250 | R32 | Hard | 6-3 6-3 | https://tennis-db.com/matches/sackmann_atp:6e2fde476104ce22699a75ea01e82d6848066519c1a24bd8e5ee06d0882a2d98/jan-siemerink-vs-dennis-van-scheppingen |
| 1998-08-19 | W | Nicolas Lapentti | New Haven | ATP 250 | R64 | Hard | 6-4 6-3 | https://tennis-db.com/matches/sackmann_atp:b11a1c52846c37f785980474d43385b2a8368014739a1cf3d59bae5687e4f5b6/jan-siemerink-vs-nicolas-lapentti |
| 1998-08-15 | L | Daniel Vacek | Cincinnati Masters | Masters 1000 | R16 | Hard | 1-6 4-6 | https://tennis-db.com/matches/sackmann_atp:75149a32ab79723571ecc84568044f8912e3c5e651f649ee6a75b125c5356caf/daniel-vacek-vs-jan-siemerink |
| 1998-08-13 | W | Wayne Ferreira | Cincinnati Masters | Masters 1000 | R32 | Hard | 7-6(5) 6-4 | https://tennis-db.com/matches/sackmann_atp:89459ebf5fa7e6a70d47276c59ac323133dcde0d4da3f798a01ba5d2b54fa376/jan-siemerink-vs-wayne-ferreira |
| 1998-08-12 | W | Sjeng Schalken | Cincinnati Masters | Masters 1000 | R64 | Hard | 1-6 6-1 7-6(2) | https://tennis-db.com/matches/sackmann_atp:f71aecc02f60e0047a8a6bbc5906c6503271ccb380d05fe0a1e348cd774b2ace/jan-siemerink-vs-sjeng-schalken |
| 1998-08-05 | L | MaliVai Washington | Canada Masters | Masters 1000 | R64 | Hard | 6-7(2) 3-6 | https://tennis-db.com/matches/sackmann_atp:605ace157497c6b986a72e36a79191dc46170cdeb23d6c24bb4105b29f0c6809/malivai-washington-vs-jan-siemerink |
| 1998-07-03 | L | Goran Ivanisevic | Wimbledon | Grand Slam | QF | Grass | 6-7(10) 6-7(5) 6-7(6) | https://tennis-db.com/matches/sackmann_atp:1937d60b655592756ab0caa7e2792707dc48da3d387067dd45058d23bb3e5232/goran-ivanisevic-vs-jan-siemerink |
| 1998-07-01 | W | Magnus Larsson | Wimbledon | Grand Slam | R16 | Grass | 4-6 6-3 6-3 6-2 | https://tennis-db.com/matches/sackmann_atp:c7b4641d36b1814913009968ea9da200e0502dae375d000ec2dfbcb506368dc0/jan-siemerink-vs-magnus-larsson |
| 1998-06-28 | W | Jonas Bjorkman | Wimbledon | Grand Slam | R32 | Grass | 7-6(6) 5-7 2-6 6-4 7-5 | https://tennis-db.com/matches/sackmann_atp:28658d611879f0f842e2023ca89fa97570e27579639f6bf0d0ac938ffe20b504/jan-siemerink-vs-jonas-bjorkman |
| 1998-06-26 | W | David Prinosil | Wimbledon | Grand Slam | R64 | Grass | 6-4 6-7(2) 6-4 6-2 | https://tennis-db.com/matches/sackmann_atp:42643cffef4e311aa1f3c0959bb8001e4733deb7598e0d9d217a34051fcea00d/jan-siemerink-vs-david-prinosil |
| 1998-06-24 | W | Slava Dosedel | Wimbledon | Grand Slam | R128 | Grass | 6-1 6-4 7-6(3) | https://tennis-db.com/matches/sackmann_atp:4bab8468f17d9e9ca81d954f1a087ff4e1a16f4ccdd0788aae300e1ffccb480a/jan-siemerink-vs-slava-dosedel |
| 1998-06-20 | L | Martin Damm Sr | S Hertogenbosch | ATP 250 | SF | Grass | 6-7(5) 3-6 | https://tennis-db.com/matches/sackmann_atp:5543012f84a31c2ef177aaeb501df79cee546415deeadc16b1becee2fc1ed874/martin-damm-sr-vs-jan-siemerink |
| 1998-06-20 | W | Steve Campbell | S Hertogenbosch | ATP 250 | QF | Grass | 2-6 6-1 6-3 | https://tennis-db.com/matches/sackmann_atp:879902117fb8f6183ff307f1d6af8d7dc2e4d1677d79ad9804c13cedb11261bd/jan-siemerink-vs-steve-campbell |
| 1998-06-19 | W | Filip Dewulf | S Hertogenbosch | ATP 250 | R16 | Grass | 6-2 6-1 | https://tennis-db.com/matches/sackmann_atp:fab479c3515b3e80c8844cba56caf0741233fa2008c709533dbd01b50843bc12/jan-siemerink-vs-filip-dewulf |
| 1998-06-18 | W | Marc Rosset | S Hertogenbosch | ATP 250 | R32 | Grass | 6-3 7-5 | https://tennis-db.com/matches/sackmann_atp:444df436506dd548d21ab010111e72902442e3099b9467b7b29eb9352b424b8e/jan-siemerink-vs-marc-rosset |
| 1998-06-12 | L | Magnus Norman | Halle | ATP 250 | R16 | Grass | 4-6 7-5 3-6 | https://tennis-db.com/matches/sackmann_atp:294ffc1cab170cb57d2ce268dbe05176a74e2a37bb0eb83b8a85ad93e19e176a/magnus-norman-vs-jan-siemerink |
| 1998-06-11 | W | Franz Stauder | Halle | ATP 250 | R32 | Grass | 4-6 6-2 7-6(6) | https://tennis-db.com/matches/sackmann_atp:c574ce76a147835fa1d04ef8fd3e58787a0af2f975e64b7ed62a0183ae8bb44e/jan-siemerink-vs-franz-stauder |
| 1998-05-27 | L | John Van Lottum | Roland Garros | Grand Slam | R128 | Clay | 7-6(5) 3-6 2-6 6-3 2-6 | https://tennis-db.com/matches/sackmann_atp:101cc49892598a63fb37a94463ffc4a82b5e46f990e2e0492ee4af0dc0709534/john-van-lottum-vs-jan-siemerink |
| 1998-05-13 | L | Arnaud Clement | Rome Masters | Masters 1000 | R64 | Clay | 1-6 4-6 | https://tennis-db.com/matches/sackmann_atp:415d473771e8cc9929592e8438f5938172fc227e557a9fb2a4856dd91c42af00/arnaud-clement-vs-jan-siemerink |
| 1998-05-06 | L | Wayne Ferreira | Hamburg Masters | Masters 1000 | R64 | Clay | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:0685d0ad65eabfd2c13c58cb8ff30b51dd7518d48157446461d2d46498170107/wayne-ferreira-vs-jan-siemerink |
| 1998-04-22 | L | Boris Becker | Monte Carlo Masters | Masters 1000 | R64 | Clay | 7-5 3-6 1-6 | https://tennis-db.com/matches/sackmann_atp:a1abfe0955585e7320892cb0424f25fb37ff51281a7ea697e123ffa0bac2da44/boris-becker-vs-jan-siemerink |
| 1998-03-19 | L | Yevgeny Kafelnikov | Miami Masters | Masters 1000 | R32 | Hard | 4-6 6-7(5) | https://tennis-db.com/matches/sackmann_atp:e9c812163c0df02351cb78bc506b21415469974d9fc400d8562a348a1d0cce08/yevgeny-kafelnikov-vs-jan-siemerink |
| 1998-03-18 | W | Gianluca Pozzi | Miami Masters | Masters 1000 | R64 | Hard | 6-3 6-2 | https://tennis-db.com/matches/sackmann_atp:d490f9c5fdb5311864d500646926cdd41121dc59986276b60e5d1f3118ee3f8c/jan-siemerink-vs-gianluca-pozzi |
| 1998-03-14 | L | David Prinosil | Copenhagen | ATP 250 | SF | Carpet | 3-6 6-7(5) | https://tennis-db.com/matches/sackmann_atp:f3fb2a4e07ccb36f48d486df29edd0f4b6424e43869cd8698e1edbc7fb1d2930/david-prinosil-vs-jan-siemerink |
| 1998-03-14 | W | Brett Steven | Copenhagen | ATP 250 | QF | Carpet | 6-3 6-3 | https://tennis-db.com/matches/sackmann_atp:c3bb27edec6c2884359028d8325edf4b6038fa353808d4f701fdc4d5ae400dcf/jan-siemerink-vs-brett-steven |
| 1998-03-13 | W | Diego Nargiso | Copenhagen | ATP 250 | R16 | Carpet | 6-4 4-6 6-3 | https://tennis-db.com/matches/sackmann_atp:2b87593b6055575b4b913c9125b0ea4f076df555eff3a75e6df86ba8edbd3bb3/jan-siemerink-vs-diego-nargiso |
| 1998-03-12 | W | Arnaud Clement | Copenhagen | ATP 250 | R32 | Carpet | 6-1 6-3 | https://tennis-db.com/matches/sackmann_atp:fbe0529a417b2d85cdf147bc81e2ad5523d2d4e58a2557fb49520866cff6c93d/jan-siemerink-vs-arnaud-clement |
| 1998-03-08 | W | Thomas Johansson | Rotterdam | ATP 250 | F | Carpet | 7-6(2) 6-2 | https://tennis-db.com/matches/sackmann_atp:ca5cc0c91cbe32815494eb93efa0627cd3880339e578288f8a80addc0938c6b6/jan-siemerink-vs-thomas-johansson |
| 1998-03-07 | W | Richard Krajicek | Rotterdam | ATP 250 | SF | Carpet | 6-4 4-6 6-4 | https://tennis-db.com/matches/sackmann_atp:fb8d46d47706f78543f57419b7706be2de8a67811eabee2b1d2f64d4fc6fa876/jan-siemerink-vs-richard-krajicek |
| 1998-03-07 | W | Patrick Rafter | Rotterdam | ATP 250 | QF | Carpet | 6-4 6-4 | https://tennis-db.com/matches/sackmann_atp:575e9d318a42ae720f9b9c8a9e1fec9a3af1652066e4372ebb179742df027a7e/jan-siemerink-vs-patrick-rafter |
| 1998-03-06 | W | Guillaume Raoux | Rotterdam | ATP 250 | R16 | Carpet | 6-7(5) 6-2 6-2 | https://tennis-db.com/matches/sackmann_atp:28655e2efea5b2ee6e18e4b748d78d7515e2f4f6df62b3b149f38ef7f5efa811/jan-siemerink-vs-guillaume-raoux |
| 1998-03-05 | W | Goran Ivanisevic | Rotterdam | ATP 250 | R32 | Carpet | 5-7 7-6(6) 6-3 | https://tennis-db.com/matches/sackmann_atp:bac539eead263fc4f7d9ed5f40243bbe8309de4c44d010130737e92fc294bea4/jan-siemerink-vs-goran-ivanisevic |
| 1998-02-28 | L | Cedric Pioline | London | ATP 250 | SF | Carpet | 3-6 6-7(4) | https://tennis-db.com/matches/sackmann_atp:7d47c9835999577645ee12dcc217275f9c6a351aacbfb54a0c714f3f5c586598/cedric-pioline-vs-jan-siemerink |
| 1998-02-28 | W | Marc Kevin Goellner | London | ATP 250 | QF | Carpet | 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:1e61ab5c205ea7faf6793de3d754efc55e78fdcf16c40224f4e2ca7228e395b5/jan-siemerink-vs-marc-kevin-goellner |
| 1998-02-27 | W | Bohdan Ulihrach | London | ATP 250 | R16 | Carpet | 6-3 6-7(4) 6-4 | https://tennis-db.com/matches/sackmann_atp:5591422614a87589426e05d32bb25802364545f419773c6d93e0477406841c0b/jan-siemerink-vs-bohdan-ulihrach |
| 1998-02-26 | W | Sergi Bruguera | London | ATP 250 | R32 | Carpet | 6-1 7-6(3) | https://tennis-db.com/matches/sackmann_atp:0c4ee642b4a62a5a1d65570fa594ebc5d3df2af15ea9ca30037c56b7afde7eea/jan-siemerink-vs-sergi-bruguera |
| 1998-02-20 | L | Magnus Larsson | Antwerp | ATP 250 | R16 | Hard | 3-6 3-6 | https://tennis-db.com/matches/sackmann_atp:caa809cf10c1fd4bbcb2009af9a2aa3b9d863449bbc8377899c56a0e2e849a77/magnus-larsson-vs-jan-siemerink |
| 1998-02-19 | W | Goran Ivanisevic | Antwerp | ATP 250 | R32 | Hard | 6-4 6-3 | https://tennis-db.com/matches/sackmann_atp:622f3921f4d6a27c2d730dfee3dfb56d54552d8fd7553a55f4f2a6073cb39dcf/jan-siemerink-vs-goran-ivanisevic |
| 1998-02-06 | L | Martin Damm Sr | Split | ATP 250 | R16 | Carpet | 4-6 3-6 | https://tennis-db.com/matches/sackmann_atp:542454fde38ed455faff5b06cadc7ab32c0f4bf5734168cb44e69137a680f01e/martin-damm-sr-vs-jan-siemerink |
| 1998-02-05 | W | Patrik Fredriksson | Split | ATP 250 | R32 | Carpet | 7-6(4) 6-1 | https://tennis-db.com/matches/sackmann_atp:2719eb642e5cafa2b46edd4066f888550bda845a23b4c8597382f69fcc24c137/jan-siemerink-vs-patrik-fredriksson |
| 1998-01-23 | L | Jerome Golmard | Australian Open | Grand Slam | R64 | Hard | 6-7(2) 5-7 7-6(5) 6-3 1-6 | https://tennis-db.com/matches/sackmann_atp:e33c6529108efffa8bca7a9b313aa21f88be6e13c02d2a1079dced0a9ac21923/jerome-golmard-vs-jan-siemerink |
| 1998-01-21 | W | Goran Ivanisevic | Australian Open | Grand Slam | R128 | Hard | 6-2 7-6(3) 3-6 6-4 | https://tennis-db.com/matches/sackmann_atp:d45fe80225141a15b78cff6983779ab0c5e11115d4f11be2fa67b866eeffb639/jan-siemerink-vs-goran-ivanisevic |
| 1998-01-09 | L | Andre Agassi | Adelaide | ATP 250 | R16 | Hard | 4-6 3-6 | https://tennis-db.com/matches/sackmann_atp:a253ece57b7ad61822262f47051c6e48ebce42bb1c72be10560c9b6a303cfd1c/andre-agassi-vs-jan-siemerink |
| 1998-01-08 | W | Dominik Hrbaty | Adelaide | ATP 250 | R32 | Hard | 6-3 6-7(5) 6-3 | https://tennis-db.com/matches/sackmann_atp:4bdbb7ed12e6c08066f6fa4272130a082bbe2d903bac054e46075b934beec8f0/jan-siemerink-vs-dominik-hrbaty |
| 1997-11-09 | L | Jonas Bjorkman | Stockholm | ATP 250 | F | Hard | 6-3 6-7(2) 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:bc669d3cd9264e101c25f2a81ad9975d5b4c8449ebeccd1a74612f4093ae557a/jonas-bjorkman-vs-jan-siemerink |
| 1997-11-08 | W | Greg Rusedski | Stockholm | ATP 250 | SF | Hard | 4-6 7-6(5) 6-4 | https://tennis-db.com/matches/sackmann_atp:0ae20b53ac1513fcf00785372c01383581ede560bcf63493bf8afb00cb8845fd/jan-siemerink-vs-greg-rusedski |
| 1997-11-08 | W | Cedric Pioline | Stockholm | ATP 250 | QF | Hard | 6-4 6-2 | https://tennis-db.com/matches/sackmann_atp:ea587377d5beb7357883821c056cd4807d1ddd2189f4c5a374263345e180a552/jan-siemerink-vs-cedric-pioline |
| 1997-11-07 | W | Boris Becker | Stockholm | ATP 250 | R16 | Hard | 7-6(6) 6-7(3) 6-3 | https://tennis-db.com/matches/sackmann_atp:9181e719e34841e1bdc6c92796851fd8620ffd56e732c1bf7489e588d90a936c/jan-siemerink-vs-boris-becker |
| 1997-11-06 | W | Fredrik Bergh | Stockholm | ATP 250 | R32 | Hard | 3-6 6-1 6-3 | https://tennis-db.com/matches/sackmann_atp:cd12c9c82ea70a28c8867260219559641737cc6f783be8d5446a07ba4627b9dd/jan-siemerink-vs-fredrik-bergh |
| 1997-10-30 | L | Greg Rusedski | Paris Masters | Masters 1000 | R32 | Carpet | 4-6 3-6 | https://tennis-db.com/matches/sackmann_atp:b485d2cf3c08794151708f6a689c8b0248185e3b7f4171f1dc64798930c7fd0e/greg-rusedski-vs-jan-siemerink |
| 1997-10-29 | W | Todd Martin | Paris Masters | Masters 1000 | R64 | Carpet | 4-6 7-6(6) 6-2 | https://tennis-db.com/matches/sackmann_atp:cd851a1e04d5ac1dd086488a337a3e94ef177939fbc33dac2bfd7f3e73a99ead/jan-siemerink-vs-todd-martin |
| 1997-10-23 | L | Jonas Bjorkman | Stuttgart Masters | Masters 1000 | R32 | Carpet | 3-6 4-6 | https://tennis-db.com/matches/sackmann_atp:cb54edecd977042fe0fc7155bd85f5006a5656ca7ec758ccd395b245a9f67e54/jonas-bjorkman-vs-jan-siemerink |
| 1997-10-22 | W | Sjeng Schalken | Stuttgart Masters | Masters 1000 | R64 | Carpet | 6-4 6-2 | https://tennis-db.com/matches/sackmann_atp:c279235470a832c2cadcfccb855383507da94222f9eae45ac25598460f3984c5/jan-siemerink-vs-sjeng-schalken |
| 1997-10-16 | L | Goran Ivanisevic | Ostrava | ATP 250 | R32 | Carpet | 7-5 3-6 3-6 | https://tennis-db.com/matches/sackmann_atp:63fec2fcf761e3f3805ca6a3bfa7a9728b1401cd2f8d84da5e4c428b581a7134/goran-ivanisevic-vs-jan-siemerink |
| 1997-10-09 | L | Jan Apell | Vienna | ATP 250 | R32 | Carpet | 2-6 4-6 | https://tennis-db.com/matches/sackmann_atp:f23e663fb3e2af9db7420b985c9320c95d63e08d00716030c433eb23a07b97b9/jan-apell-vs-jan-siemerink |
| 1997-10-02 | L | Jeff Tarango | Basel | ATP 250 | R32 | Carpet | 6-7(4) 2-6 | https://tennis-db.com/matches/sackmann_atp:edac301d226a8d764b9840e90592bdddc886935f0ff46a469402bb9df29715c4/jeff-tarango-vs-jan-siemerink |
| 1997-09-26 | L | Justin Gimelstob | Toulouse | ATP 250 | R16 | Hard | 6-3 6-7(7) 0-6 | https://tennis-db.com/matches/sackmann_atp:a812dfa6d89f64d62d98565ddd0d475b76d14667d30b8a26c115251e66699c34/justin-gimelstob-vs-jan-siemerink |
| 1997-09-25 | W | Sebastien Grosjean | Toulouse | ATP 250 | R32 | Hard | 6-3 6-1 | https://tennis-db.com/matches/sackmann_atp:183ac06400cf9c4d4333047e34f4941926419f94aebaa41c0f5b04a3e3b26602/jan-siemerink-vs-sebastien-grosjean |
| 1997-08-27 | L | Magnus Larsson | US Open | Grand Slam | R128 | Hard | 4-6 2-6 3-6 | https://tennis-db.com/matches/sackmann_atp:2bdda1a5d32489098a109a1157315cc56f7057ed523a0e704e429f6a4267d49f/magnus-larsson-vs-jan-siemerink |
| 1997-08-21 | L | Nicolas Lapentti | Long Island | ATP 250 | R32 | Hard | 6-7(4) 4-6 | https://tennis-db.com/matches/sackmann_atp:736329a8274d52358bda809f995334d11c766fbf79dee856af73f61c394de613/nicolas-lapentti-vs-jan-siemerink |
| 1997-08-14 | L | Francisco Clavet | New Haven | ATP 250 | R32 | Hard | 6-1 3-6 6-7(5) | https://tennis-db.com/matches/sackmann_atp:5f03ec52439341c0ac5d81311ea0816900cab83e93cade5ac6b11918d17c9459/francisco-clavet-vs-jan-siemerink |
| 1997-08-13 | W | Oleg Ogorodov | New Haven | ATP 250 | R64 | Hard | 7-6(1) 4-6 6-1 | https://tennis-db.com/matches/sackmann_atp:8563d223b692abfe4624652229b08329ac2a500c0d736d2f07e52049796916fa/jan-siemerink-vs-oleg-ogorodov |
| 1997-08-10 | L | Thomas Muster | Cincinnati Masters | Masters 1000 | QF | Hard | 7-6(1) 6-7(3) 6-7(5) | https://tennis-db.com/matches/sackmann_atp:ac49c1053feff0cd892cafdde3048f9987f09aa0028fd124ea58f6db42c987b1/thomas-muster-vs-jan-siemerink |
| 1997-08-09 | W | Goran Ivanisevic | Cincinnati Masters | Masters 1000 | R16 | Hard | 6-4 6-4 | https://tennis-db.com/matches/sackmann_atp:4203fd985d840ad034a859bf671c8dbbc695edbd0fc6cd7db6704b11089fb3a3/jan-siemerink-vs-goran-ivanisevic |
| 1997-08-07 | W | Petr Korda | Cincinnati Masters | Masters 1000 | R32 | Hard | 7-5 1-6 6-1 | https://tennis-db.com/matches/sackmann_atp:55f41c2d66879c1552af602234f456eeda4c03dfa0600710931debea5e603ae8/jan-siemerink-vs-petr-korda |
| 1997-08-06 | W | Brett Steven | Cincinnati Masters | Masters 1000 | R64 | Hard | 7-6(5) 7-6(1) | https://tennis-db.com/matches/sackmann_atp:a98238f71b598fde99ea838cd115e31ef0837e931516f96c04a2a780b6f63dc2/jan-siemerink-vs-brett-steven |
| 1997-07-31 | L | Chris Woodruff | Canada Masters | Masters 1000 | R32 | Hard | 7-6(4) 5-7 6-7(2) | https://tennis-db.com/matches/sackmann_atp:d84a760c95fa8521802bf3e7b36f111d044cfa072c1afd8459b6d21bae493707/chris-woodruff-vs-jan-siemerink |
| 1997-07-30 | W | Leander Paes | Canada Masters | Masters 1000 | R64 | Hard | 6-3 6-4 | https://tennis-db.com/matches/sackmann_atp:9b54f0e75bec4e2d64e9e91ca13530fb3f2d54b27162cd21415e87604e631635/jan-siemerink-vs-leander-paes |
| 1997-06-25 | L | Renzo Furlan | Wimbledon | Grand Slam | R128 | Grass | 7-6(5) 7-6(4) 4-6 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:46cacdc9afb94a1dad5b218c676440e7d83f82b4ca5eb75c6eb9f4418a8b023d/renzo-furlan-vs-jan-siemerink |
| 1997-06-20 | L | Grant Stafford | Nottingham | ATP 250 | R16 | Grass | 7-5 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:521373ccf58472d6bbb6480aecaf5a42686e0852a6dbf157ff4c15eb253d77c0/grant-stafford-vs-jan-siemerink |
| 1997-06-19 | W | Magnus Norman | Nottingham | ATP 250 | R32 | Grass | 6-0 6-4 | https://tennis-db.com/matches/sackmann_atp:3e0387b129f77c82c7100e2f6bd953ab96ad722d39e2b77d9f43a8a56c41a100/jan-siemerink-vs-magnus-norman |
| 1997-06-11 | L | Stephane Simian | Queen's Club | ATP 250 | R64 | Grass | 4-6 0-6 | https://tennis-db.com/matches/sackmann_atp:87553a0209fd1e05b5bb330cc560695c495c278fe75a6e76907ec01f6d2fe23e/stephane-simian-vs-jan-siemerink |
| 1997-06-01 | L | Mark Philippoussis | Roland Garros | Grand Slam | R32 | Clay | 4-6 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:6534497458295356afe293fbf9284a9994f4eda4a23a85e40c44ab3470f563be/mark-philippoussis-vs-jan-siemerink |
| 1997-05-30 | W | Salvador Navarro | Roland Garros | Grand Slam | R64 | Clay | 6-1 6-7(1) 6-1 6-2 | https://tennis-db.com/matches/sackmann_atp:e36351eafe8385e95cd45d2636dfa5efe347567ab25e7eb5a95420c19f1cb1f5/jan-siemerink-vs-salvador-navarro |
| 1997-05-28 | W | Sebastien Grosjean | Roland Garros | Grand Slam | R128 | Clay | 6-3 4-6 6-4 6-4 | https://tennis-db.com/matches/sackmann_atp:1dfcfacdfe21feced92c757844e2d717ee4a190358e0a15d9cd7b678309eb9d2/jan-siemerink-vs-sebastien-grosjean |
| 1997-05-15 | L | Albert Costa | Rome Masters | Masters 1000 | R32 | Clay | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:17935efe5d25bd9aa95aeeb56a77c1dc2efd95723c3638f75fcc59f48e57a34c/albert-costa-vs-jan-siemerink |
| 1997-05-14 | W | Jeff Tarango | Rome Masters | Masters 1000 | R64 | Clay | 7-5 6-3 | https://tennis-db.com/matches/sackmann_atp:b06e8fce494ceba40945b19284f4f0080e0e41876e40388119aeda82ae1be5e2/jan-siemerink-vs-jeff-tarango |
| 1997-05-07 | L | Hicham Arazi | Hamburg Masters | Masters 1000 | R64 | Clay | 4-6 2-6 | https://tennis-db.com/matches/sackmann_atp:517f0b1ba17c2498edd576d292c8a304dde817369528ca049bcecb14d332ac3b/hicham-arazi-vs-jan-siemerink |
| 1997-04-24 | L | Sergi Bruguera | Monte Carlo Masters | Masters 1000 | R32 | Clay | 4-6 4-6 | https://tennis-db.com/matches/sackmann_atp:54e8aa68c73faad6dbbc589a2ddb704511708f8f346693451760f2262bdfbaf8/sergi-bruguera-vs-jan-siemerink |
| 1997-04-23 | W | Andrei Merinov | Monte Carlo Masters | Masters 1000 | R64 | Clay | 7-6(2) 6-3 | https://tennis-db.com/matches/sackmann_atp:b18827dad7f86faab0eaac7e80ffc9aa02c07c82747d79d3c934326061b4759e/jan-siemerink-vs-andrei-merinov |

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Canonical URL: https://tennis-db.com/players/222720/jan-siemerink/matches
Data source: TennisDB (tennis-db.com)