H2H data updated: 2026-09-12 00:00 UTC

Kei Nishikori vs Ivo Karlovic H2H: 3-1

Kei Nishikori holds a 3–1 lead over Ivo Karlovic in their ATP head-to-head. Across 4 main-draw meetings, Kei Nishikori leads 3–1 on hard courts. Most recently, Kei Nishikori won the 2019 Australian Open second round 6-3 7-6(6) 5-7 5-7 7-6(7).

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Kei Nishikori
Japan Age 36 Right-Handed 178 cm / 5'10"
H2H
3 – 1
4 main-draw meetings
Ivo Karlovic
CRO Age 47 Right-Handed 211 cm / 6'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kei Nishikori #9 6-3 7-6(6) 5-7 5-7 7-6(7) Ivo Karlovic #73 Match data Jan 17, 2019* R64 Australian Open Grand Slam Hard
Kei Nishikori #7 6-3 6-4 7-6(4) Ivo Karlovic #23 Match data Sep 6, 2016* R16 US Open Grand Slam Hard
Kei Nishikori #16 6-4 7-6(0) Ivo Karlovic #80 Match data Feb 16, 2014* F Memphis ATP 250 Hard
Ivo Karlovic #150 5-4 (ret.) Kei Nishikori #16 Match data Feb 28, 2013* R32 Delray Beach Open ATP 250 Hard

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
Kei Nishikori #481 #4 6,385 2,275 436 232 65.3% 0 0 0 6 6 12
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 Kei Nishikori Ivo Karlovic
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 2007 3–5 37.5% #286 1,576 0 0 — — — — — — —
18 2008 16–11 59.3% #63 1,758 0 1 — — — — — — —
19 2009 3–6 33.3% #418 1,723 0 1 — — — — — — —
20 2010 3–9 25.0% #98 1,735 0 1 — — — — — — —
21 2011 32–22 59.3% #25 1,923 0 1 — — — — — — —
22 2012 35–18 66.0% #19 2,007 0 2 2001 0–1 0.0% #193 1,500 0 0
23 2013 34–19 64.2% #17 1,946 0 3 2002 1–2 33.3% #201 1,454 0 0
24 2014 52–15 77.6% #5 2,211 0 7 2003 9–7 56.2% #73 1,665 0 0
25 2015 51–17 75.0% #8 2,153 0 10 2004 18–25 41.9% #61 1,685 0 0
26 2016 57–21 73.1% #5 2,183 0 11 2005 17–22 43.6% #70 1,745 0 0
27 2017 30–14 68.2% #22 2,080 0 11 2006 16–18 47.1% #98 1,633 0 0
28 2018 43–21 67.2% #9 2,107 0 11 2007 45–21 68.2% #22 1,931 0 3
29 2019 29–14 67.4% #13 2,002 0 12 2008 29–25 53.7% #26 1,814 0 4
30 2020 2–4 33.3% #41 1,912 0 12 2009 21–22 48.8% #37 1,797 0 4
31 2021 27–16 62.8% #47 1,978 0 12 2010 16–9 64.0% #73 1,866 0 4
32 — — — — — — — 2011 16–20 44.4% #56 1,821 0 4
33 2023 2–1 66.7% #352 1,968 0 12 2012 14–16 46.7% #100 1,769 0 4
34 2024 7–9 43.8% #106 1,871 0 12 2013 15–13 53.6% #78 1,774 0 5
35 2025 9–9 50.0% #156 1,814 0 12 2014 36–28 56.2% #27 1,856 0 5
36 2026 1–1 50.0% #481 1,770 0 12 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 Kei Nishikori 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 %
17 2007 3 5 8 37.5% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
18 2008 14 7 21 66.7% 0 1 1 0.0% 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
19 2009 3 6 9 33.3% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
20 2010 2 5 7 28.6% 1 1 2 50.0% 0 3 3 0.0% — — — — — — — — — — — — — — — — — — — — —
21 2011 22 14 36 61.1% 7 5 12 58.3% 3 3 6 50.0% — — — — — — — — — — — — — — — — — — — — —
22 2012 21 11 32 65.6% 7 4 11 63.6% 7 3 10 70.0% — — — — 2001 0 1 1 0.0% — — — — — — — — — — — —
23 2013 24 13 37 64.9% 8 4 12 66.7% 2 2 4 50.0% — — — — 2002 1 1 2 50.0% — — — — 0 1 1 0.0% — — — —
24 2014 37 11 48 77.1% 10 2 12 83.3% 5 2 7 71.4% — — — — 2003 5 4 9 55.6% 1 1 2 50.0% 3 2 5 60.0% — — — —
25 2015 33 12 45 73.3% 14 3 17 82.4% 4 2 6 66.7% — — — — 2004 6 12 18 33.3% 5 7 12 41.7% 5 3 8 62.5% 2 3 5 40.0%
26 2016 40 15 55 72.7% 13 4 17 76.5% 4 2 6 66.7% — — — — 2005 9 11 20 45.0% 0 6 6 0.0% 7 3 10 70.0% 1 2 3 33.3%
27 2017 15 6 21 71.4% 12 6 18 66.7% 3 2 5 60.0% — — — — 2006 8 11 19 42.1% 6 4 10 60.0% 0 2 2 0.0% 2 1 3 66.7%
28 2018 27 14 41 65.9% 11 5 16 68.8% 5 2 7 71.4% — — — — 2007 30 16 46 65.2% 6 2 8 75.0% 8 2 10 80.0% 1 1 2 50.0%
29 2019 15 8 23 65.2% 10 5 15 66.7% 4 1 5 80.0% — — — — 2008 17 14 31 54.8% 5 8 13 38.5% 7 2 9 77.8% 0 1 1 0.0%
30 2020 — — — — 2 4 6 33.3% — — — — — — — — 2009 9 15 24 37.5% 5 5 10 50.0% 7 2 9 77.8% — — — —
31 2021 17 10 27 63.0% 8 4 12 66.7% 2 2 4 50.0% — — — — 2010 14 7 21 66.7% 2 2 4 50.0% — — — — — — — —
32 — — — — — — — — — — — — — — — — — 2011 12 13 25 48.0% 3 4 7 42.9% 1 3 4 25.0% — — — —
33 2023 2 1 3 66.7% — — — — — — — — — — — — 2012 12 11 23 52.2% 0 3 3 0.0% 2 2 4 50.0% — — — —
34 2024 6 6 12 50.0% 1 2 3 33.3% 0 1 1 0.0% — — — — 2013 13 11 24 54.2% 0 1 1 0.0% 2 1 3 66.7% — — — —
35 2025 6 6 12 50.0% 3 3 6 50.0% — — — — — — — — 2014 24 18 42 57.1% 7 6 13 53.8% 5 4 9 55.6% — — — —
36 2026 1 1 2 50.0% — — — — — — — — — — — — 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 — 288 151 439 65.6% 107 53 160 66.9% 41 28 69 59.4% — — — — — 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 643/668 of Kei Nishikori'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 Kei Nishikori 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%
17 2007 8/8 3.0 3.5 58.6% 69.8% 47.8% 60.4% 48.1% 60.9% 35.4% — —/— — — — — — — — — —
18 2008 25/27 3.2 2.9 59.9% 69.1% 50.9% 57.2% 45.4% 61.8% 37.4% — —/— — — — — — — — — —
19 2009 9/9 2.8 3.1 53.7% 64.6% 49.4% 39.4% 45.3% 57.3% 37.7% — —/— — — — — — — — — —
20 2010 12/12 3.1 4.0 60.3% 64.3% 43.5% 45.8% 23.0% 56.4% 33.0% — —/— — — — — — — — — —
21 2011 54/54 2.5 2.9 60.7% 68.5% 52.4% 59.5% 39.7% 62.0% 38.2% — —/— — — — — — — — — —
22 2012 48/53 2.4 2.6 62.6% 70.0% 53.6% 55.2% 39.9% 63.6% 41.4% 2001 1/1 16.0 2.0 76.6% 71.4% 46.7% 60.0% 50.0% 65.6% 32.4%
23 2013 53/53 2.6 2.8 62.3% 68.9% 52.2% 55.7% 47.2% 62.6% 40.6% 2002 2/3 15.0 8.5 53.7% 75.3% 40.4% 71.7% 75.0% 59.2% 28.6%
24 2014 66/67 4.3 2.8 60.6% 73.4% 53.9% 63.1% 42.6% 65.6% 39.9% 2003 16/16 17.6 6.3 61.1% 83.8% 53.3% 73.0% 28.3% 71.9% 29.0%
25 2015 66/68 4.6 2.5 59.6% 74.7% 54.5% 62.3% 44.7% 66.6% 39.3% 2004 40/43 21.1 5.4 61.9% 81.6% 52.8% 63.7% 25.9% 70.3% 26.8%
26 2016 71/78 3.4 2.4 61.0% 72.3% 53.9% 64.1% 47.7% 65.1% 40.2% 2005 39/39 18.7 4.4 63.3% 82.0% 51.5% 69.3% 31.9% 70.9% 25.5%
27 2017 43/44 3.3 2.3 62.3% 71.9% 53.3% 64.2% 45.5% 64.9% 40.7% 2006 34/34 18.3 3.1 65.0% 82.0% 50.3% 70.9% 34.6% 70.7% 28.1%
28 2018 64/64 3.6 2.3 60.0% 71.3% 55.9% 60.0% 44.8% 65.2% 37.8% 2007 64/66 20.6 1.9 68.7% 84.3% 54.5% 71.9% 34.1% 74.9% 29.5%
29 2019 43/43 3.1 2.8 63.6% 70.1% 54.2% 51.2% 45.0% 64.3% 40.9% 2008 54/54 17.8 1.8 66.2% 81.4% 53.2% 66.2% 31.8% 71.8% 30.1%
30 2020 6/6 1.2 2.5 63.5% 62.2% 50.7% 57.8% 31.4% 58.0% 37.8% 2009 43/43 20.7 2.3 66.4% 84.9% 54.8% 62.5% 39.2% 74.8% 29.1%
31 2021 37/43 2.5 2.0 64.2% 65.6% 55.3% 57.2% 45.2% 62.0% 38.5% 2010 25/25 18.9 2.1 64.2% 83.5% 51.8% 68.0% 27.1% 72.1% 30.3%
32 — —/— — — — — — — — — — 2011 36/36 17.6 2.7 66.4% 80.8% 49.8% 65.5% 37.0% 70.5% 28.4%
33 2023 3/3 1.7 1.3 67.5% 73.8% 53.6% 52.8% 16.7% 67.2% 29.9% 2012 30/30 16.9 2.9 64.7% 79.5% 52.3% 61.0% 31.2% 69.7% 30.5%
34 2024 15/16 2.1 1.7 66.6% 66.7% 55.0% 58.6% 39.7% 62.7% 36.1% 2013 28/28 17.3 3.4 64.1% 82.1% 55.1% 61.7% 28.7% 72.4% 27.8%
35 2025 18/18 3.2 1.9 65.6% 68.6% 47.6% 53.2% 35.9% 61.9% 35.2% 2014 64/64 18.5 2.8 66.3% 82.8% 54.0% 68.7% 34.9% 73.2% 27.5%
36 2026 2/2 2.0 1.0 60.0% 72.0% 55.5% 0.0% 11.0% 64.0% 32.0% 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 — 643/668 3.3 2.6 61.5% 70.5% 53.3% 58.6% 43.3% 63.8% 39.1% — 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 use eligible main-draw results; point statistics use matches with detailed data. 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 Kei Nishikori 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
17 2007 1576 116.9 -2.68 -0.02 0.904 48.6% +35 — — 38.9% -0.83 1–1 1–1 — +0.05 — — — — — — — — — — — — — — — —
18 2008 1758 125.8 -0.30 +0.72 0.981 49.7% +19 — -131 50.8% -0.10 8–2 (80%) 4–2 (67%) 108.5 +0.07 — — — — — — — — — — — — — — — —
19 2009 1724 129.5 -3.16 +1.29 0.884 47.6% +12 — — 35.3% -1.06 — 1–0 — -0.98 — — — — — — — — — — — — — — — —
20 2010 1735 129.7 -2.46 -1.12 0.757 44.8% +5 — -69 25.9% -1.74 2–1 (67%) 3–0 (100%) 105.5 -1.08 — — — — — — — — — — — — — — — —
21 2011 1923 151.1 -0.10 +1.28 1.007 50.3% +11 -301 -200 53.4% +0.20 14–3 (82%) 12–9 (57%) 113.8 +0.32 2000 1493 98.8 — — — — — — — — — — — — —
22 2012 2007 156.0 +1.03 +3.76 1.139 52.0% +15 -248 -162 59.8% +0.79 15–4 (79%) 9–8 (53%) 111.3 +1.94 2001 1501 100.2 -4.08 -1.53 0.943 47.8% — — — 0.0% -2.00 — 0–1 — +0.14
23 2013 1946 158.7 -0.22 +3.58 1.086 51.5% +28 -64 -111 62.7% +0.75 6–4 (60%) 9–7 (56%) 102.6 +3.21 2002 1455 101.0 -0.82 -1.26 0.701 45.7% — — — 42.9% -0.57 0–1 1–1 — -0.01
24 2014 2211 173.9 +2.73 +4.62 1.162 52.6% +18 -194 -285 68.2% +1.09 21–2 (91%) 19–10 (66%) 119.8 -0.99 2003 1666 123.8 +5.40 -4.66 1.033 50.5% -35 — +2 54.3% +0.22 2–2 (50%) 9–10 (47%) 100.2 -0.07
25 2015 2153 175.0 +2.66 +4.32 1.175 52.6% +22 +6 -165 69.5% +1.23 17–6 (74%) 9–12 (43%) 100.1 +2.30 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%) 102.1 -0.85
26 2016 2183 179.2 +2.13 +4.67 1.151 52.6% +16 +25 -149 69.4% +1.15 14–5 (74%) 16–9 (64%) 107.0 -1.29 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%) 102.5 -2.07
27 2017 2080 165.7 +1.81 +4.17 1.159 52.4% +66 +70 -116 63.6% +0.88 12–5 (71%) 9–10 (47%) 98.7 -0.06 2006 1633 131.3 +6.13 -7.11 0.960 49.6% +16 -48 — 51.1% +0.03 7–9 (44%) 19–18 (51%) 97.8 +0.32
28 2018 2107 171.3 +1.83 +2.94 1.086 51.5% +11 +66 -54 62.6% +0.63 12–5 (71%) 17–5 (77%) 109.4 -1.99 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%) 109.8 -1.29
29 2019 2002 158.4 +0.34 +4.57 1.145 52.3% +1 +149 +96 62.7% +0.73 8–6 (57%) 9–7 (56%) 95.3 +1.02 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%) 93.8 +0.70
30 2020 1913 109.6 -1.35 -0.42 0.900 47.5% — +89 — 42.1% -0.95 1–2 (33%) 2–1 (67%) 96.6 +0.14 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%) 89.5 0.00
31 2021 1978 161.2 -0.40 +2.72 1.013 50.2% +38 +96 +56 55.2% +0.23 14–7 (67%) 9–8 (53%) 102.5 -2.26 2010 1867 147.8 +6.46 -3.55 1.087 51.1% -26 -171 — 56.7% +0.33 4–0 (100%) 11–9 (55%) 107.1 -0.09
32 — — — — — — — — — — — — — — — — 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%) 98.0 -1.25
33 2023 1968 114.7 +1.39 +0.98 0.912 49.4% +49 — — 66.7% -0.17 — 3–0 (100%) — -0.03 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%) 95.3 -0.59
34 2024 1872 134.6 -0.60 +0.92 0.967 49.3% +66 +121 — 45.0% -0.42 4–2 (67%) 2–2 (50%) 99.6 -0.17 2013 1774 137.0 +5.97 -5.23 1.007 50.0% +27 — +167 51.6% +0.06 6–4 (60%) 17–11 (61%) 106.8 +0.66
35 2025 1814 129.1 -1.20 -0.68 0.924 48.6% +64 +99 — 47.6% -0.24 6–2 (75%) 2–2 (50%) 100.6 -1.30 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%) 102.5 +1.55
36 2026 1771 106.9 +1.35 -0.64 0.889 47.0% — — — 40.0% -0.60 1–0 0–1 — -0.11 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%) 99.7 +3.01
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%) 110.4 +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%) 95.8 +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%) 89.6 +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%) 99.5 +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%) 98.7 +0.12
Career — 2275 168.2 +0.96 +3.18 1.082 51.3% +23 -11 -121 60.7% +0.61 156–57 (73%) 136–94 (59%) 115.6 -0.18 — 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.