H2H data updated: 2026-09-04 00:00 UTC

Jan-Lennard Struff vs Ivo Karlovic H2H: 2-0

Jan-Lennard Struff holds a 2–0 lead over Ivo Karlovic in their ATP head-to-head. Across 2 main-draw meetings, Jan-Lennard Struff leads 1–0 on grass and 1–0 on hard courts. Most recently, Jan-Lennard Struff won the 2019 Cincinnati Open first round 7-5 7-6(4).

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Jan-Lennard Struff
Germany Age 36 Right-Handed 193 cm / 6'4"
H2H
2 – 0
2 main draw meetings
Ivo Karlovic
CRO Age 47 Right-Handed 211 cm / 6'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jan-Lennard Struff #36 7-5 7-6(4) Ivo Karlovic #80 Match data Aug 13, 2019* R64 Cincinnati Open Masters 1000 Hard
Jan-Lennard Struff #64 6-7(5) 3-6 7-6(4) 7-6(4) 13-11 Ivo Karlovic #112 Match data Jul 5, 2018* R64 Wimbledon Grand Slam Grass
Jan-Lennard Struff #116 6-3 6-3 Ivo Karlovic #131 Match data Mar 20, 2013 Q1 Q Miami Open Masters 1000 Hard

1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.

Career Comparison

Player Current Peak Pts Elo W L Win % GS 1000 including documented historical predecessor categories Finals 500 including documented historical predecessor categories 250 including documented historical predecessor categories Titles
Jan-Lennard Struff #44 #21 1,628 2,001 230 267 46.3% 0 0 0 0 1 1
Ivo Karlovic #1,066 #14 2,295 1,999 363 335 52.0% 0 0 0 0 8 8

Career Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.

Age Jan-Lennard Struff Ivo Karlovic
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 — — — — — — — 2001 0–1 0.0% #193 1,500 0 0
23 2013 4–9 30.8% #107 1,585 0 0 2002 1–2 33.3% #201 1,454 0 0
24 2014 15–17 46.9% #59 1,721 0 0 2003 9–7 56.2% #73 1,665 0 0
25 2015 4–18 18.2% #107 1,625 0 0 2004 18–25 41.9% #61 1,685 0 0
26 2016 11–18 37.9% #63 1,784 0 0 2005 17–22 43.6% #70 1,745 0 0
27 2017 27–28 49.1% #53 1,856 0 0 2006 16–18 47.1% #98 1,633 0 0
28 2018 23–24 48.9% #57 1,856 0 0 2007 45–21 68.2% #22 1,931 0 3
29 2019 34–27 55.7% #35 1,883 0 0 2008 29–25 53.7% #26 1,814 0 4
30 2020 11–14 44.0% #36 1,821 0 0 2009 21–22 48.8% #37 1,797 0 4
31 2021 23–27 46.0% #51 1,765 0 0 2010 16–9 64.0% #73 1,866 0 4
32 2022 3–10 23.1% #150 1,677 0 0 2011 16–20 44.4% #56 1,821 0 4
33 2023 20–17 54.1% #25 1,806 0 0 2012 14–16 46.7% #100 1,769 0 4
34 2024 28–21 57.1% #42 1,883 0 1 2013 15–13 53.6% #78 1,774 0 5
35 2025 14–21 40.0% #83 1,822 0 1 2014 36–28 56.2% #27 1,856 0 5
36 2026 13–16 44.8% #44 1,787 0 1 2015 38–25 60.3% #23 1,917 0 6
37 — — — — — — — 2016 32–22 59.3% #20 1,972 0 8
38 — — — — — — — 2017 15–20 42.9% #80 1,771 0 8
39 — — — — — — — 2018 11–16 40.7% #100 1,645 0 8
40 — — — — — — — 2019 11–15 42.3% #95 1,675 0 8
41 — — — — — — — 2020 1–4 20.0% #147 1,620 0 8
42 — — — — — — — 2021 2–4 33.3% #279 1,625 0 8

Surface Results by Age

Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.

Age Jan-Lennard Struff Ivo Karlovic
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
22 — — — — — — — — — — — — — — — — — 2001 0 1 1 0.0% — — — — — — — — — — — —
23 2013 1 3 4 25.0% 2 4 6 33.3% 1 2 3 33.3% — — — — 2002 1 1 2 50.0% — — — — 0 1 1 0.0% — — — —
24 2014 9 8 17 52.9% 5 6 11 45.5% 1 3 4 25.0% — — — — 2003 5 4 9 55.6% 1 1 2 50.0% 3 2 5 60.0% — — — —
25 2015 4 8 12 33.3% 0 7 7 0.0% 0 3 3 0.0% — — — — 2004 6 12 18 33.3% 5 7 12 41.7% 5 3 8 62.5% 2 3 5 40.0%
26 2016 7 9 16 43.8% 3 6 9 33.3% 1 3 4 25.0% — — — — 2005 9 11 20 45.0% 0 6 6 0.0% 7 3 10 70.0% 1 2 3 33.3%
27 2017 16 15 31 51.6% 10 10 20 50.0% 1 3 4 25.0% — — — — 2006 8 11 19 42.1% 6 4 10 60.0% 0 2 2 0.0% 2 1 3 66.7%
28 2018 13 13 26 50.0% 8 8 16 50.0% 2 3 5 40.0% — — — — 2007 30 16 46 65.2% 6 2 8 75.0% 8 2 10 80.0% 1 1 2 50.0%
29 2019 17 17 34 50.0% 11 7 18 61.1% 6 3 9 66.7% — — — — 2008 17 14 31 54.8% 5 8 13 38.5% 7 2 9 77.8% 0 1 1 0.0%
30 2020 10 11 21 47.6% 1 3 4 25.0% — — — — — — — — 2009 9 15 24 37.5% 5 5 10 50.0% 7 2 9 77.8% — — — —
31 2021 11 16 27 40.7% 11 8 19 57.9% 1 3 4 25.0% — — — — 2010 14 7 21 66.7% 2 2 4 50.0% — — — — — — — —
32 2022 2 6 8 25.0% 0 1 1 0.0% 1 3 4 25.0% — — — — 2011 12 13 25 48.0% 3 4 7 42.9% 1 3 4 25.0% — — — —
33 2023 6 10 16 37.5% 9 5 14 64.3% 5 2 7 71.4% — — — — 2012 12 11 23 52.2% 0 3 3 0.0% 2 2 4 50.0% — — — —
34 2024 7 12 19 36.8% 15 6 21 71.4% 6 3 9 66.7% — — — — 2013 13 11 24 54.2% 0 1 1 0.0% 2 1 3 66.7% — — — —
35 2025 8 11 19 42.1% 3 7 10 30.0% 3 3 6 50.0% — — — — 2014 24 18 42 57.1% 7 6 13 53.8% 5 4 9 55.6% — — — —
36 2026 3 9 12 25.0% 4 4 8 50.0% 6 3 9 66.7% — — — — 2015 26 18 44 59.1% 1 3 4 25.0% 11 4 15 73.3% — — — —
37 — — — — — — — — — — — — — — — — — 2016 20 13 33 60.6% 4 6 10 40.0% 8 3 11 72.7% — — — —
38 — — — — — — — — — — — — — — — — — 2017 8 12 20 40.0% 3 4 7 42.9% 4 4 8 50.0% — — — —
39 — — — — — — — — — — — — — — — — — 2018 4 7 11 36.4% 5 6 11 45.5% 2 3 5 40.0% — — — —
40 — — — — — — — — — — — — — — — — — 2019 9 11 20 45.0% 1 2 3 33.3% 1 2 3 33.3% — — — —
41 — — — — — — — — — — — — — — — — — 2020 1 4 5 20.0% — — — — — — — — — — — —
42 — — — — — — — — — — — — — — — — — 2021 1 3 4 25.0% — — — — 1 1 2 50.0% — — — —
Career — 114 148 262 43.5% 82 82 164 50.0% 34 37 71 47.9% — — — — — 229 213 442 51.8% 54 70 124 43.5% 74 44 118 62.7% 6 8 14 42.9%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 489/498 of Jan-Lennard Struff's and 692/698 of Ivo Karlovic's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Jan-Lennard Struff Ivo Karlovic
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
22 — —/— — — — — — — — — — 2001 1/1 16.0 2.0 76.6% 71.4% 46.7% 60.0% 50.0% 65.6% 32.4%
23 2013 13/13 6.5 4.1 61.6% 71.3% 49.5% 45.8% 36.0% 62.6% 37.0% 2002 2/3 15.0 8.5 53.7% 75.3% 40.4% 71.7% 75.0% 59.2% 28.6%
24 2014 32/32 6.2 2.3 58.5% 73.9% 51.7% 59.7% 39.0% 64.5% 35.9% 2003 16/16 17.6 6.3 61.1% 83.8% 53.3% 73.0% 28.3% 71.9% 29.0%
25 2015 22/22 9.3 4.8 59.2% 75.0% 45.5% 55.1% 37.8% 62.7% 32.6% 2004 40/43 21.1 5.4 61.9% 81.6% 52.8% 63.7% 25.9% 70.3% 26.8%
26 2016 28/29 7.2 4.5 52.7% 76.8% 50.3% 54.3% 39.2% 64.3% 36.3% 2005 39/39 18.7 4.4 63.3% 82.0% 51.5% 69.3% 31.9% 70.9% 25.5%
27 2017 55/55 8.3 4.3 53.2% 77.9% 50.3% 63.5% 39.5% 65.0% 34.8% 2006 34/34 18.3 3.1 65.0% 82.0% 50.3% 70.9% 34.6% 70.7% 28.1%
28 2018 47/47 10.3 4.3 56.2% 76.6% 48.5% 58.8% 46.1% 64.2% 35.2% 2007 64/66 20.6 1.9 68.7% 84.3% 54.5% 71.9% 34.1% 74.9% 29.5%
29 2019 61/61 11.0 2.8 55.8% 79.2% 51.8% 65.6% 39.6% 67.3% 36.4% 2008 54/54 17.8 1.8 66.2% 81.4% 53.2% 66.2% 31.8% 71.8% 30.1%
30 2020 25/25 8.9 2.9 55.4% 75.8% 47.9% 64.2% 32.8% 63.3% 37.5% 2009 43/43 20.7 2.3 66.4% 84.9% 54.8% 62.5% 39.2% 74.8% 29.1%
31 2021 47/50 9.2 4.0 55.5% 74.0% 47.9% 55.8% 33.9% 62.4% 36.6% 2010 25/25 18.9 2.1 64.2% 83.5% 51.8% 68.0% 27.1% 72.1% 30.3%
32 2022 13/13 10.5 3.8 57.3% 75.3% 49.0% 55.4% 34.9% 64.1% 32.8% 2011 36/36 17.6 2.7 66.4% 80.8% 49.8% 65.5% 37.0% 70.5% 28.4%
33 2023 37/37 9.7 3.6 58.6% 75.2% 50.5% 64.9% 44.3% 65.2% 34.9% 2012 30/30 16.9 2.9 64.7% 79.5% 52.3% 61.0% 31.2% 69.7% 30.5%
34 2024 46/49 10.0 4.4 57.9% 77.6% 52.3% 65.0% 35.8% 66.9% 37.1% 2013 28/28 17.3 3.4 64.1% 82.1% 55.1% 61.7% 28.7% 72.4% 27.8%
35 2025 34/35 9.4 3.5 58.6% 74.1% 49.2% 50.2% 30.1% 63.6% 34.0% 2014 64/64 18.5 2.8 66.3% 82.8% 54.0% 68.7% 34.9% 73.2% 27.5%
36 2026 29/30 11.1 4.2 57.7% 72.9% 48.8% 62.0% 35.6% 62.8% 34.1% 2015 63/63 23.0 3.6 66.4% 84.9% 57.0% 73.1% 33.3% 75.5% 29.0%
37 — —/— — — — — — — — — — 2016 54/54 20.9 5.2 63.8% 81.7% 56.4% 72.1% 35.7% 72.6% 26.9%
38 — —/— — — — — — — — — — 2017 35/35 20.8 5.1 65.1% 81.8% 56.2% 67.0% 29.2% 72.7% 25.9%
39 — —/— — — — — — — — — — 2018 27/27 23.5 5.9 65.1% 83.9% 54.4% 71.8% 28.8% 73.4% 25.9%
40 — —/— — — — — — — — — — 2019 26/26 23.7 4.3 65.0% 83.3% 54.3% 72.4% 24.8% 73.2% 25.6%
41 — —/— — — — — — — — — — 2020 5/5 13.4 3.6 66.8% 75.6% 56.8% 71.8% 21.3% 69.5% 24.7%
42 — —/— — — — — — — — — — 2021 6/6 18.2 5.2 64.8% 79.3% 46.0% 44.2% 29.2% 67.6% 27.1%
Career — 489/498 9.3 3.8 56.6% 76.0% 49.8% 60.0% 38.1% 64.6% 35.6% — 692/698 19.8 3.5 65.3% 82.6% 53.8% 68.2% 32.4% 72.6% 28.1%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.

Age Jan-Lennard Struff Ivo Karlovic
Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule Yr Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule
19 2009 1452 96.1 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
20 2010 1437 107.1 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
21 2011 1417 99.5 — — — — — — — — — — — — — 2000 1493 98.8 — — — — — — — — — — — — —
22 2012 1380 96.0 — — — — — — — — — — — — — 2001 1501 100.2 -4.08 -1.53 0.943 47.8% — — — 0.0% -2.00 — 0–1 — +0.14
23 2013 1586 121.5 -1.23 +0.31 0.991 49.6% -69 -29 +15 38.9% -0.39 1–2 (33%) 1–7 (13%) — +0.50 2002 1455 101.0 -0.82 -1.26 0.701 45.7% — — — 42.9% -0.57 0–1 1–1 — -0.01
24 2014 1722 139.8 +0.16 -0.05 1.012 50.3% -12 -77 -156 40.3% -0.42 7–3 (70%) 3–8 (27%) — -0.72 2003 1666 123.8 +5.40 -4.66 1.033 50.5% -35 — +2 54.3% +0.22 2–2 (50%) 9–10 (47%) — -0.07
25 2015 1625 133.3 -1.42 -2.36 0.872 47.8% +51 -34 -85 30.6% -0.89 4–8 (33%) 6–12 (33%) — -0.45 2004 1686 136.3 +5.37 -7.05 0.904 48.9% -54 -121 +84 45.1% -0.31 10–14 (42%) 28–28 (50%) — -0.85
26 2016 1784 143.3 +0.54 +0.57 1.018 50.3% +5 -104 -264 42.7% -0.23 4–8 (33%) 8–5 (62%) — -0.92 2005 1745 141.3 +6.26 -7.68 0.875 48.7% -20 -269 +91 45.4% -0.26 6–7 (46%) 24–22 (52%) — -2.07
27 2017 1856 152.0 +1.05 -0.70 0.994 50.1% -7 -109 -333 47.3% -0.08 8–8 (50%) 11–18 (38%) — -1.13 2006 1633 131.3 +6.13 -7.11 0.960 49.6% +16 -48 — 51.1% +0.03 7–9 (44%) 19–18 (51%) — +0.32
28 2018 1857 148.2 +0.47 -0.42 0.985 49.9% -17 -133 -246 49.6% -0.05 9–10 (47%) 15–14 (52%) — -0.96 2007 1931 150.5 +9.95 -5.32 1.173 51.8% -6 -289 -103 60.5% +0.53 17–8 (68%) 37–30 (55%) — -1.29
29 2019 1884 157.4 +2.72 +1.70 1.113 51.5% -64 +3 -176 54.2% +0.38 10–10 (50%) 13–15 (46%) — -2.42 2008 1815 150.1 +7.57 -4.88 1.069 50.7% +25 -181 +93 53.4% +0.24 7–10 (41%) 26–29 (47%) — +0.70
30 2020 1821 155.2 +0.74 +0.67 1.021 50.2% +13 -16 — 47.0% -0.03 3–5 (38%) 4–7 (36%) — -1.42 2009 1798 147.0 +8.98 -4.91 1.158 51.5% -104 -119 +253 51.8% +0.26 4–9 (31%) 14–24 (37%) — 0.00
31 2021 1766 144.6 -0.12 -0.04 0.974 49.4% -30 +102 -91 47.6% -0.24 6–10 (38%) 12–11 (52%) — -0.32 2010 1867 147.8 +6.46 -3.55 1.087 51.1% -26 -171 — 56.7% +0.33 4–0 (100%) 11–9 (55%) — -0.09
32 2022 1677 122.0 +0.37 -2.56 0.912 48.2% -3 — -65 33.3% -0.61 2–4 (33%) 1–7 (13%) — -0.69 2011 1822 147.5 +6.44 -5.95 0.962 49.6% +14 -88 +122 46.5% -0.14 5–5 (50%) 19–19 (50%) — -1.25
33 2023 1807 145.1 +1.27 -0.07 1.005 50.1% -83 +104 -90 51.6% +0.11 10–8 (56%) 11–11 (50%) — -0.08 2012 1769 144.3 +5.38 -4.85 1.007 49.8% +37 -113 +182 48.7% -0.18 2–6 (25%) 17–14 (55%) — -0.59
34 2024 1883 151.8 +3.06 +1.41 1.121 51.7% -174 +103 -53 58.6% +0.42 8–10 (44%) 25–16 (61%) — -2.74 2013 1774 137.0 +5.97 -5.23 1.007 50.0% +27 — +167 51.6% +0.06 6–4 (60%) 17–11 (61%) — +0.66
35 2025 1823 139.7 -0.04 -0.88 0.935 48.5% -52 +32 -3 42.1% -0.60 5–4 (56%) 7–10 (41%) — -2.29 2014 1857 153.7 +7.97 -6.74 1.029 49.9% +21 -115 +54 55.0% +0.13 11–8 (58%) 34–31 (52%) — +1.55
36 2026 1787 129.2 -0.46 -1.24 0.918 48.8% -127 +10 +129 46.6% -0.41 7–7 (50%) 10–9 (53%) — -1.11 2015 1917 155.1 +10.01 -5.54 1.186 51.7% -35 -231 +136 57.1% +0.52 15–12 (56%) 32–44 (42%) — +3.02
37 — — — — — — — — — — — — — — — — 2016 1973 155.0 +7.27 -7.09 0.983 50.0% -18 -250 +83 56.8% +0.16 12–6 (67%) 41–25 (62%) — +3.08
38 — — — — — — — — — — — — — — — — 2017 1771 141.4 +6.85 -7.48 0.952 49.6% +15 -53 +153 44.9% -0.17 6–5 (55%) 17–24 (41%) — +1.27
39 — — — — — — — — — — — — — — — — 2018 1646 126.4 +5.95 -7.94 0.974 49.6% +41 +26 +201 46.2% -0.10 5–9 (36%) 17–24 (41%) — +0.79
40 — — — — — — — — — — — — — — — — 2019 1675 134.3 +6.12 -7.61 0.954 49.4% +46 -25 +100 49.3% -0.17 2–6 (25%) 20–18 (53%) — +1.01
41 — — — — — — — — — — — — — — — — 2020 1621 114.5 +1.55 -3.38 0.808 46.4% +33 — — 28.6% -1.00 — 1–4 (20%) — -0.32
42 — — — — — — — — — — — — — — — — 2021 1626 114.4 +1.80 -4.17 0.837 47.4% +19 — — 31.3% -0.75 2–1 (67%) 0–3 (0%) — +0.12
Career — 2001 149.8 +0.84 -0.02 1.004 50.0% -39 -3 -93 47.3% -0.12 84–97 (46%) 127–150 (46%) 98.0 -2.99 — 2000 150.3 +7.24 -6.06 1.023 50.2% -4 -133 +101 51.7% +0.09 123–122 (50%) 384–389 (50%) 100.0 +0.88

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.