H2H data updated: 2026-09-03 00:00 UTC

Kei Nishikori vs John Isner H2H: 2-1

Kei Nishikori holds a 2–1 lead over John Isner in their ATP head-to-head. Across 3 main-draw meetings, Kei Nishikori leads 2–1 on hard courts. Most recently, Kei Nishikori won the 2016 Indian Wells Open fourth round 1-6 7-6(2) 7-6(5).

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Kei Nishikori
Japan Age 36 Right-Handed 178 cm / 5'10"
H2H
2 – 1
3 main draw meetings
John Isner
USA Age 41 Right-Handed 208 cm / 6'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kei Nishikori #6 1-6 7-6(2) 7-6(5) John Isner #11 Match data Mar 17, 2016* R16 Indian Wells Open Masters 1000 Hard
Kei Nishikori #5 4-6 6-4 6-4 John Isner #18 Match data Aug 9, 2015* F Washington Open ATP 500 Hard
John Isner #24 6-4 6-3 Kei Nishikori #5 Match data Apr 3, 2015* QF Miami Open Masters 1000 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
John Isner #660 #8 3,720 2,068 470 294 61.5% 0 1 0 0 15 16

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 John Isner
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 2007 8–5 61.5% #106 1,656 0 0
23 2013 34–19 64.2% #17 1,946 0 3 2008 11–19 36.7% #144 1,607 0 0
24 2014 52–15 77.6% #5 2,211 0 7 2009 27–18 60.0% #34 1,829 0 0
25 2015 51–17 75.0% #8 2,153 0 10 2010 38–20 65.5% #19 1,884 0 1
26 2016 57–21 73.1% #5 2,183 0 11 2011 34–19 64.2% #18 2,020 0 3
27 2017 30–14 68.2% #22 2,080 0 11 2012 41–19 68.3% #14 1,977 0 5
28 2018 43–21 67.2% #9 2,107 0 11 2013 38–22 63.3% #14 1,984 0 7
29 2019 29–14 67.4% #13 2,002 0 12 2014 37–21 63.8% #19 1,935 0 9
30 2020 2–4 33.3% #41 1,912 0 12 2015 45–23 66.2% #11 2,028 0 10
31 2021 27–16 62.8% #47 1,978 0 12 2016 30–20 60.0% #19 2,021 0 10
32 — — — — — — — 2017 36–21 63.2% #17 1,985 0 12
33 2023 2–1 66.7% #352 1,968 0 12 2018 32–22 59.3% #10 1,958 0 14
34 2024 7–9 43.8% #106 1,871 0 12 2019 29–17 63.0% #19 1,922 0 15
35 2025 9–9 50.0% #156 1,814 0 12 2020 10–7 58.8% #25 1,845 0 15
36 2026 1–1 50.0% #481 1,770 0 12 2021 23–11 67.6% #24 1,945 0 16
37 — — — — — — — 2022 22–16 57.9% #41 1,925 0 16
38 — — — — — — — 2023 9–14 39.1% #172 1,711 0 16

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 John Isner
Yr HardClayGrass Yr HardClayGrass
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% 2007 8 4 12 66.7% — — — — 0 1 1 0.0%
23 2013 24 13 37 64.9% 8 4 12 66.7% 2 2 4 50.0% 2008 9 12 21 42.9% 1 3 4 25.0% 1 4 5 20.0%
24 2014 37 11 48 77.1% 10 2 12 83.3% 5 2 7 71.4% 2009 25 17 42 59.5% 2 1 3 66.7% — — — —
25 2015 33 12 45 73.3% 14 3 17 82.4% 4 2 6 66.7% 2010 29 13 42 69.0% 8 6 14 57.1% 1 1 2 50.0%
26 2016 40 15 55 72.7% 13 4 17 76.5% 4 2 6 66.7% 2011 26 13 39 66.7% 2 5 7 28.6% 6 1 7 85.7%
27 2017 15 6 21 71.4% 12 6 18 66.7% 3 2 5 60.0% 2012 27 12 39 69.2% 6 5 11 54.5% 8 2 10 80.0%
28 2018 27 14 41 65.9% 11 5 16 68.8% 5 2 7 71.4% 2013 26 14 40 65.0% 8 5 13 61.5% 4 3 7 57.1%
29 2019 15 8 23 65.2% 10 5 15 66.7% 4 1 5 80.0% 2014 27 14 41 65.9% 6 5 11 54.5% 4 2 6 66.7%
30 2020 — — — — 2 4 6 33.3% — — — — 2015 31 14 45 68.9% 10 6 16 62.5% 4 3 7 57.1%
31 2021 17 10 27 63.0% 8 4 12 66.7% 2 2 4 50.0% 2016 22 13 35 62.9% 5 5 10 50.0% 3 2 5 60.0%
32 — — — — — — — — — — — — — 2017 23 14 37 62.2% 7 4 11 63.6% 6 3 9 66.7%
33 2023 2 1 3 66.7% — — — — — — — — 2018 20 16 36 55.6% 7 5 12 58.3% 5 1 6 83.3%
34 2024 6 6 12 50.0% 1 2 3 33.3% 0 1 1 0.0% 2019 24 16 40 60.0% — — — — 5 1 6 83.3%
35 2025 6 6 12 50.0% 3 3 6 50.0% — — — — 2020 9 6 15 60.0% 1 1 2 50.0% — — — —
36 2026 1 1 2 50.0% — — — — — — — — 2021 18 8 26 69.2% 5 2 7 71.4% 0 1 1 0.0%
37 — — — — — — — — — — — — — 2022 11 10 21 52.4% 7 4 11 63.6% 4 2 6 66.7%
38 — — — — — — — — — — — — — 2023 6 10 16 37.5% 0 2 2 0.0% 3 2 5 60.0%
Career — 288 151 439 65.6% 107 53 160 66.9% 41 28 69 59.4% — 341 206 547 62.3% 75 59 134 56.0% 54 29 83 65.1%

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 756/764 of John Isner'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 John Isner
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% 2007 13/13 19.6 3.1 67.2% 78.2% 59.4% 65.5% 19.8% 71.9% 26.6%
23 2013 53/53 2.6 2.8 62.3% 68.9% 52.2% 55.7% 47.2% 62.6% 40.6% 2008 29/30 15.0 3.4 66.9% 77.1% 52.3% 60.0% 26.1% 68.8% 27.4%
24 2014 66/67 4.3 2.8 60.6% 73.4% 53.9% 63.1% 42.6% 65.6% 39.9% 2009 45/45 14.5 2.5 67.1% 75.0% 57.4% 65.9% 29.5% 69.1% 30.0%
25 2015 66/68 4.6 2.5 59.6% 74.7% 54.5% 62.3% 44.7% 66.6% 39.3% 2010 58/58 17.8 2.3 69.1% 76.5% 55.9% 68.0% 39.3% 70.1% 29.9%
26 2016 71/78 3.4 2.4 61.0% 72.3% 53.9% 64.1% 47.7% 65.1% 40.2% 2011 53/53 15.2 2.8 69.2% 78.0% 55.6% 62.5% 40.1% 71.2% 31.5%
27 2017 43/44 3.3 2.3 62.3% 71.9% 53.3% 64.2% 45.5% 64.9% 40.7% 2012 56/60 16.7 2.2 67.9% 78.2% 57.0% 72.2% 33.2% 71.6% 31.1%
28 2018 64/64 3.6 2.3 60.0% 71.3% 55.9% 60.0% 44.8% 65.2% 37.8% 2013 60/60 16.3 1.7 67.7% 79.4% 57.8% 66.5% 33.7% 72.2% 31.1%
29 2019 43/43 3.1 2.8 63.6% 70.1% 54.2% 51.2% 45.0% 64.3% 40.9% 2014 57/58 17.4 1.8 67.8% 79.1% 57.8% 73.0% 27.3% 72.1% 30.2%
30 2020 6/6 1.2 2.5 63.5% 62.2% 50.7% 57.8% 31.4% 58.0% 37.8% 2015 68/68 18.5 1.8 70.3% 80.2% 58.6% 74.8% 37.5% 73.8% 29.6%
31 2021 37/43 2.5 2.0 64.2% 65.6% 55.3% 57.2% 45.2% 62.0% 38.5% 2016 50/50 23.2 2.7 69.2% 82.4% 55.3% 68.3% 35.9% 73.9% 30.7%
32 — —/— — — — — — — — — — 2017 57/57 19.7 2.2 70.6% 80.6% 56.5% 63.6% 41.2% 73.5% 29.1%
33 2023 3/3 1.7 1.3 67.5% 73.8% 53.6% 52.8% 16.7% 67.2% 29.9% 2018 54/54 22.4 2.4 69.1% 81.3% 56.7% 70.1% 30.6% 73.7% 29.7%
34 2024 15/16 2.1 1.7 66.6% 66.7% 55.0% 58.6% 39.7% 62.7% 36.1% 2019 46/46 21.8 1.7 71.0% 81.4% 58.6% 70.1% 34.2% 74.7% 29.8%
35 2025 18/18 3.2 1.9 65.6% 68.6% 47.6% 53.2% 35.9% 61.9% 35.2% 2020 17/17 21.9 3.5 71.5% 78.6% 54.9% 84.1% 25.0% 72.2% 28.8%
36 2026 2/2 2.0 1.0 60.0% 72.0% 55.5% 0.0% 11.0% 64.0% 32.0% 2021 33/34 20.6 2.1 68.5% 79.0% 55.9% 62.7% 34.5% 71.8% 28.4%
37 — —/— — — — — — — — — — 2022 37/38 22.6 2.8 68.8% 80.3% 54.1% 64.9% 36.6% 72.1% 27.7%
38 — —/— — — — — — — — — — 2023 23/23 20.9 2.9 67.7% 79.7% 57.4% 72.2% 18.8% 72.3% 28.0%
Career — 643/668 3.3 2.6 61.5% 70.5% 53.3% 58.6% 43.3% 63.8% 39.1% — 756/764 18.8 2.3 68.9% 79.2% 56.7% 68.4% 33.7% 72.2% 29.8%

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 Kei Nishikori John Isner
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%) — +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%) — -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%) — +0.32 — — — — — — — — — — — — — — — —
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%) — +1.94 2007 1656 138.0 +5.43 -3.75 0.947 49.4% +37 — — 54.1% -0.19 5–1 (83%) 12–7 (63%) — +0.01
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%) — +3.21 2008 1608 128.0 +4.14 -6.69 0.881 48.3% +39 -96 -116 41.0% -0.51 4–8 (33%) 13–12 (52%) — +0.16
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%) — -0.99 2009 1830 145.6 +4.72 -4.63 0.972 50.0% +1 -280 — 57.0% +0.23 12–6 (67%) 26–12 (68%) — +0.93
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%) — +2.30 2010 1885 154.2 +5.86 -4.84 1.002 50.5% +41 -194 — 58.8% +0.34 19–9 (68%) 32–16 (67%) — +2.28
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%) — -1.29 2011 2020 160.4 +7.13 -3.98 1.097 51.5% +30 -361 -297 61.6% +0.53 11–11 (50%) 32–20 (62%) — +1.83
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%) — -0.06 2012 1978 157.8 +7.12 -4.36 1.092 51.3% +43 -260 -71 62.7% +0.43 15–10 (60%) 38–18 (68%) — +3.35
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%) — -1.99 2013 1985 159.0 +7.64 -3.71 1.119 51.3% +52 -198 -94 59.5% +0.36 18–11 (62%) 36–17 (68%) — +3.48
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%) — +1.02 2014 1935 157.9 +7.20 -4.42 1.079 50.8% +50 -99 -27 61.8% +0.44 12–6 (67%) 41–21 (66%) — +3.24
30 2020 1913 109.6 -1.35 -0.42 0.900 47.5% — +89 — 42.1% -0.95 1–2 (33%) 2–1 (67%) — +0.14 2015 2029 168.0 +8.71 -4.22 1.132 51.6% +54 -121 -120 62.7% +0.57 12–9 (57%) 39–25 (61%) — +3.80
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%) — -2.26 2016 2021 163.0 +8.76 -3.60 1.179 51.8% +44 -140 -79 58.6% +0.48 9–10 (47%) 31–30 (51%) — +1.41
32 — — — — — — — — — — — — — — — — 2017 1986 158.3 +8.00 -5.60 1.094 51.2% +14 -91 -60 60.0% +0.42 11–9 (55%) 40–24 (63%) — +3.24
33 2023 1968 114.7 +1.39 +0.98 0.912 49.4% +49 — — 66.7% -0.17 — 3–0 (100%) — -0.03 2018 1959 158.8 +8.37 -4.32 1.129 51.3% -23 -61 +77 57.0% +0.42 14–11 (56%) 37–32 (54%) — +2.48
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%) — -0.17 2019 1922 154.7 +8.16 -3.97 1.178 51.7% -6 — +115 61.2% +0.47 8–7 (53%) 29–23 (56%) — +3.19
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%) — -1.30 2020 1846 134.4 +4.91 -4.34 1.035 50.7% +22 — — 60.9% +0.50 3–3 (50%) 14–7 (67%) — +1.74
36 2026 1771 106.9 +1.39 -0.69 0.889 47.0% — — — 40.0% -0.60 1–0 0–1 — -0.11 2021 1945 152.3 +6.93 -5.43 1.006 50.2% 0 +9 — 62.5% +0.27 10–5 (67%) 21–9 (70%) — +0.90
37 — — — — — — — — — — — — — — — — 2022 1926 145.5 +6.21 -5.79 0.996 49.8% -21 +13 +80 55.1% -0.02 11–8 (58%) 30–17 (64%) — +1.11
38 — — — — — — — — — — — — — — — — 2023 1711 125.8 +5.40 -5.66 1.012 49.9% +36 — +244 45.3% -0.14 3–6 (33%) 11–17 (39%) — +1.74
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 — 2068 162.0 +7.10 -4.58 1.071 50.9% +25 -137 -39 58.7% +0.34 177–130 (58%) 482–307 (61%) 111.1 +4.58

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.