# ATP Players - K

Source: https://tennis-db.com/players/k
Tour: ATP
Rows on canonical first page: 165
Total matching players: 165

| Player | Country | Peak rank | Peak Elo | Matches | W-L | Win % | Titles | Slams | Years | URL |
| --- | --- | ---: | ---: | ---: | --- | ---: | ---: | ---: | --- | --- |
| Gustavo Kuerten | BRA | 1 | 2140 | 518 | 336-182 | 64.9 | 20 | 3 | 1996-2008 | https://tennis-db.com/players/222191/gustavo-kuerten |
| Yevgeny Kafelnikov | RUS | 1 | 2071 | 849 | 568-281 | 66.9 | 25 | 2 | 1992-2003 | https://tennis-db.com/players/222415/yevgeny-kafelnikov |
| Petr Korda | CZE | 2 | 2110 | 616 | 378-238 | 61.4 | 10 | 1 | 1985-1999 | https://tennis-db.com/players/222280/petr-korda |
| Nicolas Kiefer | GER | 4 | 1984 | 595 | 343-252 | 57.6 | 6 | 0 | 1994-2010 | https://tennis-db.com/players/222779/nicolas-kiefer |
| Richard Krajicek | NED | 4 | 2044 | 615 | 408-207 | 66.3 | 17 | 1 | 1991-2003 | https://tennis-db.com/players/222783/richard-krajicek |
| Jan Kodes | CZE | 5 | 2117 | 739 | 465-274 | 62.9 | 10 | 3 | 1968-1983 | https://tennis-db.com/players/4152802/jan-kodes |
| Aaron Krickstein | USA | 6 | 2043 | 633 | 381-252 | 60.2 | 9 | 0 | 1983-1996 | https://tennis-db.com/players/222798/aaron-krickstein |
| Karol Kucera | SVK | 6 | 1994 | 489 | 259-230 | 53.0 | 6 | 0 | 1991-2005 | https://tennis-db.com/players/222622/karol-kucera |
| Johan Kriek | USA | 7 | 2052 | 603 | 380-223 | 63.0 | 14 | 2 | 1977-1992 | https://tennis-db.com/players/3959822/johan-kriek |
| Karen Khachanov | RUS | 8 | 2096 | 541 | 312-229 | 57.7 | 7 | 0 | 2013-2026 | https://tennis-db.com/players/17/karen-khachanov |
| Nick Kyrgios | AUS | 13 | 2153 | 312 | 197-115 | 63.1 | 7 | 0 | 2013-2026 | https://tennis-db.com/players/770/nick-kyrgios |
| Aslan Karatsev | RUS | 14 | 1985 | 164 | 78-86 | 47.6 | 3 | 0 | 2013-2024 | https://tennis-db.com/players/733/aslan-karatsev |
| Ivo Karlovic | CRO | 14 | 1998 | 690 | 357-333 | 51.7 | 8 | 0 | 2001-2021 | https://tennis-db.com/players/222328/ivo-karlovic |
| Sebastian Korda | USA | 15 | 2059 | 258 | 154-104 | 59.7 | 3 | 0 | 2018-2026 | https://tennis-db.com/players/46/sebastian-korda |
| Philipp Kohlschreiber | GER | 16 | 2054 | 816 | 444-372 | 54.4 | 7 | 0 | 2002-2022 | https://tennis-db.com/players/222172/philipp-kohlschreiber |
| Stefan Koubek | AUT | 20 | 1794 | 430 | 195-235 | 45.3 | 3 | 0 | 1994-2011 | https://tennis-db.com/players/224127/stefan-koubek |
| Bernd Karbacher | GER | 22 | 1847 | 290 | 133-157 | 45.9 | 2 | 0 | 1991-2000 | https://tennis-db.com/players/222487/bernd-karbacher |
| Martin Klizan | SVK | 24 | 1979 | 274 | 128-146 | 46.7 | 6 | 0 | 2007-2025 | https://tennis-db.com/players/931/martin-klizan |
| Thomaz Koch | BRA | 24 | 1873 | 357 | 200-157 | 56.0 | 6 | 0 | 1968-1983 | https://tennis-db.com/players/4463470/thomaz-koch |
| Filip Krajinovic | SRB | 26 | 1984 | 240 | 115-125 | 47.9 | 0 | 0 | 2009-2023 | https://tennis-db.com/players/222296/filip-krajinovic |
| Miomir Kecmanovic | SRB | 27 | 1943 | 361 | 174-187 | 48.2 | 2 | 0 | 2018-2026 | https://tennis-db.com/players/51/miomir-kecmanovic |
| Nicklas Kulti | SWE | 32 | 1819 | 329 | 150-179 | 45.6 | 3 | 0 | 1988-2000 | https://tennis-db.com/players/224402/nicklas-kulti |
| Igor Kunitsyn | RUS | 35 | 1755 | 236 | 87-149 | 36.9 | 1 | 0 | 1999-2013 | https://tennis-db.com/players/452161/igor-kunitsyn |
| Michel Kratochvil | SUI | 35 | 1761 | 159 | 70-89 | 44.0 | 0 | 0 | 2000-2007 | https://tennis-db.com/players/222776/michel-kratochvil |
| Carlos Kirmayr | BRA | 36 | 1892 | 292 | 135-157 | 46.2 | 1 | 0 | 1972-1987 | https://tennis-db.com/players/4379972/carlos-kirmayr |
| Mark Koevermans | NED | 37 | 1777 | 144 | 64-80 | 44.4 | 1 | 0 | 1988-1993 | https://tennis-db.com/players/3931063/mark-koevermans |
| Andrey Kuznetsov | RUS | 39 | 1952 | 172 | 72-100 | 41.9 | 0 | 0 | 2009-2023 | https://tennis-db.com/players/451183/andrey-kuznetsov |
| Mikhail Kukushkin | KAZ | 39 | 1907 | 362 | 144-218 | 39.8 | 1 | 0 | 2007-2025 | https://tennis-db.com/players/413/mikhail-kukushkin |
| Lukasz Kubot | POL | 41 | 1870 | 200 | 82-118 | 41.0 | 0 | 0 | 2004-2015 | https://tennis-db.com/players/451597/lukasz-kubot |
| Patrik Kuhnen | GER | 43 | 1787 | 277 | 126-151 | 45.5 | 0 | 0 | 1986-1996 | https://tennis-db.com/players/3706375/patrik-kuhnen |
| Eric Korita | USA | 46 | 1726 | 61 | 29-32 | 47.5 | 0 | 0 | 1982-1987 | https://tennis-db.com/players/4362978/eric-korita |
| Evgeny Korolev | KAZ | 46 | 1791 | 163 | 72-91 | 44.2 | 0 | 0 | 2006-2013 | https://tennis-db.com/players/224318/evgeny-korolev |
| Nicklas Kroon | SWE | 46 | 1777 | 113 | 48-65 | 42.5 | 1 | 0 | 1986-1993 | https://tennis-db.com/players/3829516/nicklas-kroon |
| Dominik Koepfer | GER | 49 | 1806 | 125 | 54-71 | 43.2 | 0 | 0 | 2017-2025 | https://tennis-db.com/players/608/dominik-koepfer |
| Mark Kratzmann | AUS | 50 | 1750 | 156 | 60-96 | 38.5 | 0 | 0 | 1982-1992 | https://tennis-db.com/players/4075274/mark-kratzmann |
| Pavel Kotov | RUS | 50 | 1816 | 81 | 36-45 | 44.4 | 0 | 0 | 2020-2025 | https://tennis-db.com/players/580/pavel-kotov |
| Soonwoo Kwon | KOR | 52 | 1847 | 119 | 56-63 | 47.1 | 2 | 0 | 2018-2026 | https://tennis-db.com/players/581/soonwoo-kwon |
| Denis Kudla | USA | 53 | 1836 | 202 | 71-131 | 35.1 | 0 | 0 | 2010-2024 | https://tennis-db.com/players/225388/denis-kudla |
| Zoltan Kuharszky | HUN | 53 | 1721 | 115 | 43-72 | 37.4 | 0 | 0 | 1980-1988 | https://tennis-db.com/players/4319275/zoltan-kuharszky |
| Aleksandar Kovacevic | USA | 54 | 1719 | 112 | 40-72 | 35.7 | 0 | 0 | 2022-2026 | https://tennis-db.com/players/58/aleksandar-kovacevic |
| Hans Kary | AUT | 54 | 1772 | 366 | 150-216 | 41.0 | 1 | 0 | 1968-1982 | https://tennis-db.com/players/4534769/hans-kary |
| Daniel Koellerer | AUT | 55 | 1653 | 53 | 19-34 | 35.8 | 0 | 0 | 2003-2010 | https://tennis-db.com/players/455517/daniel-koellerer |
| Vit Kopriva | CZE | 55 | 1762 | 70 | 31-39 | 44.3 | 0 | 0 | 2021-2026 | https://tennis-db.com/players/201/vit-kopriva |
| Damir Keretic | GER | 58 | 1740 | 207 | 87-120 | 42.0 | 0 | 0 | 1979-1989 | https://tennis-db.com/players/4267589/damir-keretic |
| Bradley Klahn | USA | 63 | 1733 | 56 | 13-43 | 23.2 | 0 | 0 | 2010-2023 | https://tennis-db.com/players/453087/bradley-klahn |
| Jason Kubler | AUS | 63 | 1781 | 57 | 24-33 | 42.1 | 0 | 0 | 2010-2026 | https://tennis-db.com/players/292/jason-kubler |
| Kevin Kim | USA | 63 | 1641 | 141 | 44-97 | 31.2 | 0 | 0 | 1996-2010 | https://tennis-db.com/players/476439/kevin-kim |
| Lars Koslowski | GER | 63 | 1658 | 45 | 17-28 | 37.8 | 0 | 0 | 1989-1993 | https://tennis-db.com/players/3706605/lars-koslowski |
| Tobias Kamke | GER | 64 | 1764 | 159 | 60-99 | 37.7 | 0 | 0 | 2007-2019 | https://tennis-db.com/players/451565/tobias-kamke |
| Thanasi Kokkinakis | AUS | 65 | 1864 | 164 | 73-91 | 44.5 | 1 | 0 | 2014-2026 | https://tennis-db.com/players/550/thanasi-kokkinakis |
| Blaz Kavcic | SLO | 68 | 1810 | 119 | 40-79 | 33.6 | 0 | 0 | 2008-2018 | https://tennis-db.com/players/453187/blaz-kavcic |
| Robert Kendrick | USA | 69 | 1729 | 113 | 35-78 | 31.0 | 0 | 0 | 2003-2012 | https://tennis-db.com/players/454217/robert-kendrick |
| Steve Krulevitz | USA | 70 | 1765 | 324 | 122-202 | 37.7 | 0 | 0 | 1969-1983 | https://tennis-db.com/players/4544296/steve-krulevitz |
| Jens Knippschild | GER | 76 | 1701 | 116 | 47-69 | 40.5 | 0 | 0 | 1994-2002 | https://tennis-db.com/players/3144125/jens-knippschild |
| Chris Kachel | AUS | 77 | 1612 | 118 | 32-86 | 27.1 | 0 | 0 | 1973-1980 | https://tennis-db.com/players/4580067/chris-kachel |
| Jun Kamiwazumi | JPN | 78 | 1628 | 164 | 64-100 | 39.0 | 0 | 0 | 1968-1984 | https://tennis-db.com/players/4511146/jun-kamiwazumi |
| Jun Kuki | JPN | 78 | 1662 | 207 | 73-134 | 35.3 | 0 | 0 | 1968-1982 | https://tennis-db.com/players/4570333/jun-kuki |
| Konstantin Kravchuk | RUS | 78 | 1689 | 32 | 7-25 | 21.9 | 0 | 0 | 2006-2017 | https://tennis-db.com/players/455481/konstantin-kravchuk |
| Nicolas Kicker | ARG | 78 | 1713 | 47 | 19-28 | 40.4 | 0 | 0 | 2016-2022 | https://tennis-db.com/players/357/nicolas-kicker |
| Jozef Kovalik | SVK | 80 | 1758 | 72 | 26-46 | 36.1 | 0 | 0 | 2016-2024 | https://tennis-db.com/players/691/jozef-kovalik |
| Ivan Kley | BRA | 81 | 1515 | 50 | 14-36 | 28.0 | 0 | 0 | 1982-1990 | https://tennis-db.com/players/4189529/ivan-kley |
| Julian Knowle | AUT | 86 | 1552 | 42 | 9-33 | 21.4 | 0 | 0 | 1992-2012 | https://tennis-db.com/players/573830/julian-knowle |
| Attila Korpas | GER | 87 | 1656 | 65 | 28-37 | 43.1 | 0 | 0 | 1969-1976 | https://tennis-db.com/players/4575845/attila-korpas |
| Roko Karanusic | CRO | 88 | 1669 | 50 | 12-38 | 24.0 | 0 | 0 | 2003-2009 | https://tennis-db.com/players/455753/roko-karanusic |
| Zeljko Krajan | CRO | 88 | 1539 | 34 | 8-26 | 23.5 | 0 | 0 | 1997-2005 | https://tennis-db.com/players/2971234/zeljko-krajan |
| Patrick Kypson | USA | 89 | 1568 | 20 | 5-15 | 25.0 | 0 | 0 | 2017-2026 | https://tennis-db.com/players/218/patrick-kypson |
| Austin Krajicek | USA | 94 | 1714 | 36 | 12-24 | 33.3 | 0 | 0 | 2008-2017 | https://tennis-db.com/players/473692/austin-krajicek |
| Mark Knowles | BAH | 96 | 1623 | 74 | 23-51 | 31.1 | 0 | 0 | 1988-2000 | https://tennis-db.com/players/3362997/mark-knowles |
| Edwin Kempes | NED | 98 | 1581 | 27 | 10-17 | 37.0 | 0 | 0 | 1999-2002 | https://tennis-db.com/players/3043380/edwin-kempes |
| Michael Kohlmann | GER | 98 | 1611 | 71 | 24-47 | 33.8 | 0 | 0 | 1998-2007 | https://tennis-db.com/players/453949/michael-kohlmann |
| Stefan Kozlov | USA | 103 | 1673 | 35 | 9-26 | 25.7 | 0 | 0 | 2013-2022 | https://tennis-db.com/players/387/stefan-kozlov |
| Darian King | BAR | 106 | 1704 | 12 | 3-9 | 25.0 | 0 | 0 | 2015-2023 | https://tennis-db.com/players/1317/darian-king |
| Michael Kures | USA | 107 | 1557 | 33 | 10-23 | 30.3 | 0 | 0 | 1981-1989 | https://tennis-db.com/players/4285712/michael-kures |
| Nicholas Kalogeropoulos | GRE | 108 | 1681 | 127 | 53-74 | 41.7 | 0 | 0 | 1968-1980 | https://tennis-db.com/players/4580508/nicholas-kalogeropoulos |
| Lukas Klein | SVK | 109 | 1738 | 25 | 10-15 | 40.0 | 0 | 0 | 2021-2025 | https://tennis-db.com/players/241/lukas-klein |
| Wojtek Kowalski | POL | 109 | 1527 | 18 | 6-12 | 33.3 | 0 | 0 | 1988-1996 | https://tennis-db.com/players/3766850/wojtek-kowalski |
| Zdenek Kolar | CZE | 111 | 1565 | 5 | 1-4 | 20.0 | 0 | 0 | 2018-2026 | https://tennis-db.com/players/276/zdenek-kolar |
| Ray Keldie | AUS | 113 | 1622 | 170 | 64-106 | 37.6 | 0 | 0 | 1968-1975 | https://tennis-db.com/players/4601113/ray-keldie |
| Vladimir Korotkov | RUS | 113 | 1665 | 44 | 24-20 | 54.5 | 0 | 0 | 1968-1974 | https://tennis-db.com/players/4603298/vladimir-korotkov |
| Jan Kukal | CZE | 115 | 1656 | 138 | 57-81 | 41.3 | 0 | 0 | 1968-1976 | https://tennis-db.com/players/4048198/jan-kukal |
| Alexander Kudryavtsev | RUS | 117 | 1657 | 20 | 5-15 | 25.0 | 0 | 0 | 2008-2016 | https://tennis-db.com/players/457667/alexander-kudryavtsev |
| Mark Kaplan | RSA | 117 | 1579 | 32 | 11-21 | 34.4 | 0 | 0 | 1988-1994 | https://tennis-db.com/players/224892/mark-kaplan |
| Cesar Kist | BRA | 119 | 1500 | 24 | 6-18 | 25.0 | 0 | 0 | 1982-1991 | https://tennis-db.com/players/4002534/cesar-kist |
| Alex Kuznetsov | USA | 120 | 1711 | 39 | 9-30 | 23.1 | 0 | 0 | 2004-2016 | https://tennis-db.com/players/456879/alex-kuznetsov |
| Jerome Kym | SUI | 123 | 1648 | 9 | 5-4 | 55.6 | 0 | 0 | 2024-2026 | https://tennis-db.com/players/281/jerome-kym |
| Patrice Kuchna | FRA | 125 | 1578 | 21 | 7-14 | 33.3 | 0 | 0 | 1980-1988 | https://tennis-db.com/players/4260972/patrice-kuchna |
| Peter Kanderal | SUI | 126 | 1589 | 27 | 11-16 | 40.7 | 0 | 0 | 1973-1977 | https://tennis-db.com/players/4595369/peter-kanderal |
| Jozsef Krocsko | HUN | 129 | 1518 | 14 | 4-10 | 28.6 | 0 | 0 | 1993-1997 | https://tennis-db.com/players/3612075/jozsef-krocsko |
| Dieter Kindlmann | GER | 130 | 1643 | 12 | 1-11 | 8.3 | 0 | 0 | 2004-2010 | https://tennis-db.com/players/455319/dieter-kindlmann |
| Tuomas Ketola | FIN | 130 | 1598 | 39 | 9-30 | 23.1 | 0 | 0 | 1997-2005 | https://tennis-db.com/players/2895223/tuomas-ketola |
| Tom Kreiss | USA | 131 | 1526 | 14 | 4-10 | 28.6 | 0 | 0 | 1969-1976 | https://tennis-db.com/players/4597695/tom-kreiss |
| Mitchell Krueger | USA | 135 | 1688 | 36 | 11-25 | 30.6 | 0 | 0 | 2014-2025 | https://tennis-db.com/players/303/mitchell-krueger |
| Hans Peter Kandler | AUT | 136 | 1500 | 26 | 5-21 | 19.2 | 0 | 0 | 1980-1987 | https://tennis-db.com/players/4382251/hans-peter-kandler |
| Mike Kreiss | USA | 136 | 1500 | 24 | 3-21 | 12.5 | 0 | 0 | 1968-1973 | https://tennis-db.com/players/4604980/mike-kreiss |
| Paul Kilderry | AUS | 138 | 1565 | 29 | 8-21 | 27.6 | 0 | 0 | 1992-2000 | https://tennis-db.com/players/3435946/paul-kilderry |
| Petr Kralert | CZE | 138 | 1576 | 6 | 1-5 | 16.7 | 0 | 0 | 1997-2001 | https://tennis-db.com/players/2873262/petr-kralert |
| Vadim Kutsenko | RUS | 140 | 1558 | 12 | 3-9 | 25.0 | 0 | 0 | 1998-2004 | https://tennis-db.com/players/2396074/vadim-kutsenko |
| Andy Kohlberg | USA | 142 | 1516 | 50 | 13-37 | 26.0 | 0 | 0 | 1978-1988 | https://tennis-db.com/players/4345290/andy-kohlberg |
| Roger Knapp | USA | 146 | 1561 | 10 | 4-6 | 40.0 | 0 | 0 | 1984-1985 | https://tennis-db.com/players/4474221/roger-knapp |
| Bruce Kleege | USA | 148 | 1500 | 45 | 10-35 | 22.2 | 0 | 0 | 1978-1984 | https://tennis-db.com/players/4483449/bruce-kleege |
| Jeff Klaparda | USA | 153 | 1564 | 14 | 5-9 | 35.7 | 0 | 0 | 1984-1989 | https://tennis-db.com/players/4256633/jeff-klaparda |
| Takeshi Koura | JPN | 155 | 1502 | 9 | 3-6 | 33.3 | 0 | 0 | 1971-1973 | https://tennis-db.com/players/4606529/takeshi-koura |
| Bastian Knittel | GER | 157 | 1607 | 5 | 1-4 | 20.0 | 0 | 0 | 2010-2013 | https://tennis-db.com/players/455441/bastian-knittel |
| Dimitar Kuzmanov | BUL | 158 | 1560 | 13 | 3-10 | 23.1 | 0 | 0 | 2016-2023 | https://tennis-db.com/players/362/dimitar-kuzmanov |
| Pedja Krstin | SRB | 159 | 1562 | 5 | 1-4 | 20.0 | 0 | 0 | 2014-2021 | https://tennis-db.com/players/470041/pedja-krstin |
| Oleksii Krutykh | UKR | 160 | 1581 | 3 | 0-3 | 0.0 | 0 | 0 | 2023-2023 | https://tennis-db.com/players/671/oleksii-krutykh |
| Alibek Kachmazov | RUS | 161 | 1636 | 11 | 4-7 | 36.4 | 0 | 0 | 2019-2025 | https://tennis-db.com/players/465/alibek-kachmazov |
| Ney Keller | BRA | 161 | 1513 | 7 | 1-6 | 14.3 | 0 | 0 | 1980-1983 | https://tennis-db.com/players/4446827/ney-keller |
| Kevin King | USA | 162 | 1614 | 7 | 1-6 | 14.3 | 0 | 0 | 2013-2021 | https://tennis-db.com/players/487109/kevin-king |
| Kent Kinnear | USA | 163 | 1564 | 31 | 9-22 | 29.0 | 0 | 0 | 1988-1997 | https://tennis-db.com/players/3644084/kent-kinnear |
| Mark Keil | USA | 167 | 1545 | 12 | 4-8 | 33.3 | 0 | 0 | 1988-1994 | https://tennis-db.com/players/3652072/mark-keil |
| Brydan Klein | GBR | 169 | 1513 | 13 | 3-10 | 23.1 | 0 | 0 | 2008-2017 | https://tennis-db.com/players/453181/brydan-klein |
| Nicola Kuhn | GER | 174 | 1537 | 12 | 3-9 | 25.0 | 0 | 0 | 2017-2022 | https://tennis-db.com/players/1545/nicola-kuhn |
| Jan Kallquist | SWE | 177 | 1500 | 13 | 0-13 | 0.0 | 0 | 0 | 1974-1982 | https://tennis-db.com/players/4570583/jan-kallquist |
| Thai-Son Kwiatkowski | USA | 181 | 1529 | 7 | 0-7 | 0.0 | 0 | 0 | 2017-2023 | https://tennis-db.com/players/472977/thai-son-kwiatkowski |
| Ivo Klec | SVK | 184 | 1531 | 8 | 1-7 | 12.5 | 0 | 0 | 2004-2013 | https://tennis-db.com/players/455017/ivo-klec |
| Evan King | USA | 185 | 1573 | 5 | 1-4 | 20.0 | 0 | 0 | 2009-2018 | https://tennis-db.com/players/471833/evan-king |
| Cedric Kauffmann | FRA | 195 | 1588 | 3 | 0-3 | 0.0 | 0 | 0 | 1999-2001 | https://tennis-db.com/players/3231717/cedric-kauffmann |
| Evgeny Kirillov | RUS | 205 | 1531 | 2 | 0-2 | 0.0 | 0 | 0 | 2005-2011 | https://tennis-db.com/players/472381/evgeny-kirillov |
| George Kalovelonis | GRE | 208 | 1541 | 13 | 3-10 | 23.1 | 0 | 0 | 1983-1994 | https://tennis-db.com/players/3628049/george-kalovelonis |
| Raven Klaasen | RSA | 208 | 1606 | 8 | 4-4 | 50.0 | 0 | 0 | 2009-2011 | https://tennis-db.com/players/453819/raven-klaasen |
| Christian Kuhnke | GER | 210 | 1875 | 67 | 43-24 | 64.2 | 2 | 0 | 1969-1974 | https://tennis-db.com/players/4603188/christian-kuhnke |
| Kevin Krawietz | GER | 211 | 1500 | 5 | 1-4 | 20.0 | 0 | 0 | 2009-2019 | https://tennis-db.com/players/454290/kevin-krawietz |
| Moise Kouame | FRA | 211 | 1576 | 8 | 3-5 | 37.5 | 0 | 0 | 2026-2026 | https://tennis-db.com/players/933/moise-kouame |
| Daniel King-Turner | NZL | 217 | 1507 | 6 | 0-6 | 0.0 | 0 | 0 | 2006-2013 | https://tennis-db.com/players/453583/daniel-king-turner |
| Florian Krumrey | GER | 219 | 1508 | 3 | 1-2 | 33.3 | 0 | 0 | 1991-1992 | https://tennis-db.com/players/3780819/florian-krumrey |
| Henri Kontinen | FIN | 220 | 1551 | 3 | 1-2 | 33.3 | 0 | 0 | 2009-2010 | https://tennis-db.com/players/469315/henri-kontinen |
| Marc Kimmich | AUS | 226 | 1500 | 3 | 0-3 | 0.0 | 0 | 0 | 2005-2006 | https://tennis-db.com/players/2859543/marc-kimmich |
| Filip Krajcik | AUT | 227 | 1500 | 7 | 1-6 | 14.3 | 0 | 0 | 1979-1981 | https://tennis-db.com/players/4344011/filip-krajcik |
| Daniel Kosakowski | USA | 230 | 1595 | 3 | 1-2 | 33.3 | 0 | 0 | 2011-2014 | https://tennis-db.com/players/492881/daniel-kosakowski |
| Bobby Kokavec | CAN | 232 | 1508 | 5 | 1-4 | 20.0 | 0 | 0 | 1994-1999 | https://tennis-db.com/players/3350749/bobby-kokavec |
| Ralph Kok | NED | 243 | 1500 | 5 | 1-4 | 20.0 | 0 | 0 | 1989-1993 | https://tennis-db.com/players/4027373/ralph-kok |
| Nicolas Kelaidis | GRE | 244 | 1500 | 18 | 2-16 | 11.1 | 0 | 0 | 1972-1981 | https://tennis-db.com/players/4575844/nicolas-kelaidis |
| Ergi Kirkin | TUR | 251 | 1523 | 2 | 0-2 | 0.0 | 0 | 0 | 2019-2021 | https://tennis-db.com/players/649/ergi-kirkin |
| Hartmut Kirchhubel | GER | 253 | 1558 | 12 | 3-9 | 25.0 | 0 | 0 | 1973-1982 | https://tennis-db.com/players/4570098/hartmut-kirchhubel |
| Tom Kempers | NED | 253 | 1500 | 9 | 2-7 | 22.2 | 0 | 0 | 1990-1997 | https://tennis-db.com/players/3664504/tom-kempers |
| Nicolas Kischkewitz | FRA | 260 | 1521 | 2 | 1-1 | 50.0 | 0 | 0 | 1993-1993 | https://tennis-db.com/players/3179743/nicolas-kischkewitz |
| Andrey Kumantsov | RUS | 261 | 1560 | 2 | 0-2 | 0.0 | 0 | 0 | 2011-2012 | https://tennis-db.com/players/483724/andrey-kumantsov |
| Robbie Koenig | RSA | 262 | 1534 | 14 | 3-11 | 21.4 | 0 | 0 | 1992-2001 | https://tennis-db.com/players/3061082/robbie-koenig |
| Randall King | HKG | 269 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1976-1976 | https://tennis-db.com/players/4545314/randall-king |
| Hiroki Kondo | JPN | 275 | 1514 | 4 | 1-3 | 25.0 | 0 | 0 | 2001-2008 | https://tennis-db.com/players/453519/hiroki-kondo |
| Ola Kristiansson | SWE | 277 | 1500 | 4 | 1-3 | 25.0 | 0 | 0 | 1990-1994 | https://tennis-db.com/players/3823740/ola-kristiansson |
| Tetsu Kuramitsu | JPN | 281 | 1500 | 10 | 1-9 | 10.0 | 0 | 0 | 1976-1986 | https://tennis-db.com/players/4363434/tetsu-kuramitsu |
| Ray Kelly | AUS | 288 | 1500 | 11 | 2-9 | 18.2 | 0 | 0 | 1976-1981 | https://tennis-db.com/players/4585736/ray-kelly |
| Dimitar Kutrovsky | BUL | 293 | 1566 | 3 | 2-1 | 66.7 | 0 | 0 | 2012-2012 | https://tennis-db.com/players/508295/dimitar-kutrovsky |
| Aleksandar Kitinov | MKD | 296 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1995-1998 | https://tennis-db.com/players/3345817/aleksandar-kitinov |
| Phillip King | USA | 298 | 1500 | 11 | 1-10 | 9.1 | 0 | 0 | 1999-2007 | https://tennis-db.com/players/476781/phillip-king |
| Andrew Kratzmann | AUS | 299 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1992-1994 | https://tennis-db.com/players/3884121/andrew-kratzmann |
| Igor Kornienko | RUS | 310 | 1539 | 6 | 2-4 | 33.3 | 0 | 0 | 1999-2000 | https://tennis-db.com/players/3377716/igor-kornienko |
| Dave Kanter | USA | 326 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1975-1976 | https://tennis-db.com/players/4601261/dave-kanter |
| Arjun Kadhe | IND | 328 | 1500 | 4 | 0-4 | 0.0 | 0 | 0 | 2018-2022 | https://tennis-db.com/players/523164/arjun-kadhe |
| Omni Kumar | USA | 348 | 1568 | 5 | 2-3 | 40.0 | 0 | 0 | 2023-2024 | https://tennis-db.com/players/567320/omni-kumar |
| Kevin Kerns | USA | 349 | 1500 | 4 | 1-3 | 25.0 | 0 | 0 | 1981-1982 | https://tennis-db.com/players/4562005/kevin-kerns |
| Robin Kern | GER | 350 | 1535 | 3 | 0-3 | 0.0 | 0 | 0 | 2011-2013 | https://tennis-db.com/players/455221/robin-kern |
| Adam Kennedy | AUS | 358 | 1500 | 3 | 0-3 | 0.0 | 0 | 0 | 2002-2003 | https://tennis-db.com/players/2800881/adam-kennedy |
| Shanker Krishnan | IND | 373 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1978-1979 | https://tennis-db.com/players/4565699/shanker-krishnan |
| Strong Kirchheimer | USA | 375 | 1516 | 2 | 0-2 | 0.0 | 0 | 0 | 2023-2024 | https://tennis-db.com/players/795/strong-kirchheimer |
| Thibault Kuentz | FRA | 397 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1980-1988 | https://tennis-db.com/players/4351107/thibault-kuentz |
| Robert Kroll | GER | 441 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1993-1994 | https://tennis-db.com/players/3882308/robert-kroll |
| Edson Krause | BRA | 453 | 1516 | 2 | 1-1 | 50.0 | 0 | 0 | 1983-1983 | https://tennis-db.com/players/4428470/edson-krause |
| Taisen Kanai | JPN | 465 | 1500 | 4 | 1-3 | 25.0 | 0 | 0 | 1978-1981 | https://tennis-db.com/players/4585734/taisen-kanai |
| Gil Kovalski | ISR | 485 | 1516 | 3 | 1-2 | 33.3 | 0 | 0 | 1990-1992 | https://tennis-db.com/players/4049257/gil-kovalski |
| Akira Kawaguchi | JPN | 496 | 1500 | 2 | 0-2 | 0.0 | 0 | 0 | 1978-1979 | https://tennis-db.com/players/4585735/akira-kawaguchi |
| Martin Koek | NED | 555 | 1521 | 4 | 1-3 | 25.0 | 0 | 0 | 1972-1972 | https://tennis-db.com/players/4580513/martin-koek |
| Sultan Khalfan | QAT | 950 | 1500 | 9 | 0-9 | 0.0 | 0 | 0 | 1996-2007 | https://tennis-db.com/players/523099/sultan-khalfan |

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Canonical URL: https://tennis-db.com/players/k
Data source: TennisDB (tennis-db.com)