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

Kei Nishikori vs Ryan Harrison H2H: 3-0

Kei Nishikori holds a 3–0 lead over Ryan Harrison in their ATP head-to-head. Across 3 main-draw meetings, Kei Nishikori leads 3–0 on hard courts. Most recently, Kei Nishikori won the 2016 Memphis round of 16 6-2 7-5.

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Kei Nishikori
Japan Age 36 Right-Handed 178 cm / 5'10"
H2H
3 – 0
3 main draw meetings
Ryan Harrison
USA Age 34 Right-Handed 185 cm / 6'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kei Nishikori #7 6-2 7-5 Ryan Harrison #124 Match data Feb 12, 2016* R16 Memphis ATP 250 Hard
Kei Nishikori #5 6-4 6-4 Ryan Harrison #110 Match data Mar 15, 2015* R64 Indian Wells Open Masters 1000 Hard
Kei Nishikori #5 3-6 6-3 6-4 Ryan Harrison #165 Match data Feb 13, 2015* R16 Memphis 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
Ryan Harrison #1,551 #40 1,160 1,893 117 156 42.9% 0 0 0 0 1 1

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 Ryan Harrison
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 2008 1–1 50.0% #748 1,509 0 0
17 2007 3–5 37.5% #286 1,576 0 0 — — — — — — —
18 2008 16–11 59.3% #63 1,758 0 1 2010 4–9 30.8% #173 1,621 0 0
19 2009 3–6 33.3% #418 1,723 0 1 2011 14–19 42.4% #79 1,730 0 0
20 2010 3–9 25.0% #98 1,735 0 1 2012 21–21 50.0% #69 1,766 0 0
21 2011 32–22 59.3% #25 1,923 0 1 2013 11–21 34.4% #100 1,733 0 0
22 2012 35–18 66.0% #19 2,007 0 2 2014 5–13 27.8% #191 1,731 0 0
23 2013 34–19 64.2% #17 1,946 0 3 2015 5–8 38.5% #112 1,682 0 0
24 2014 52–15 77.6% #5 2,211 0 7 2016 11–11 50.0% #90 1,823 0 0
25 2015 51–17 75.0% #8 2,153 0 10 2017 20–23 46.5% #47 1,804 0 1
26 2016 57–21 73.1% #5 2,183 0 11 2018 21–21 50.0% #62 1,765 0 1
27 2017 30–14 68.2% #22 2,080 0 11 2019 3–7 30.0% #302 1,666 0 1
28 2018 43–21 67.2% #9 2,107 0 11 2020 1–1 50.0% #479 1,648 0 1
29 2019 29–14 67.4% #13 2,002 0 12 2021 0–1 0.0% #456 1,625 0 1
30 2020 2–4 33.3% #41 1,912 0 12 — — — — — — —
31 2021 27–16 62.8% #47 1,978 0 12 — — — — — — —
33 2023 2–1 66.7% #352 1,968 0 12 — — — — — — —
34 2024 7–9 43.8% #106 1,871 0 12 — — — — — — —
35 2025 9–9 50.0% #156 1,814 0 12 — — — — — — —
36 2026 1–1 50.0% #481 1,770 0 12 — — — — — — —

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 Ryan Harrison
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 %
16 — — — — — — — — — — — — — 2008 — — — — 1 1 2 50.0% — — — —
17 2007 3 5 8 37.5% — — — — — — — — — — — — — — — — — — — — —
18 2008 14 7 21 66.7% 0 1 1 0.0% 2 3 5 40.0% 2010 2 7 9 22.2% — — — — 2 2 4 50.0%
19 2009 3 6 9 33.3% — — — — — — — — 2011 13 14 27 48.1% 0 2 2 0.0% 1 3 4 25.0%
20 2010 2 5 7 28.6% 1 1 2 50.0% 0 3 3 0.0% 2012 11 13 24 45.8% 3 4 7 42.9% 7 4 11 63.6%
21 2011 22 14 36 61.1% 7 5 12 58.3% 3 3 6 50.0% 2013 9 14 23 39.1% 1 3 4 25.0% 1 4 5 20.0%
22 2012 21 11 32 65.6% 7 4 11 63.6% 7 3 10 70.0% 2014 5 10 15 33.3% 0 1 1 0.0% 0 2 2 0.0%
23 2013 24 13 37 64.9% 8 4 12 66.7% 2 2 4 50.0% 2015 5 7 12 41.7% — — — — 0 1 1 0.0%
24 2014 37 11 48 77.1% 10 2 12 83.3% 5 2 7 71.4% 2016 11 10 21 52.4% — — — — 0 1 1 0.0%
25 2015 33 12 45 73.3% 14 3 17 82.4% 4 2 6 66.7% 2017 15 13 28 53.6% 4 7 11 36.4% 1 3 4 25.0%
26 2016 40 15 55 72.7% 13 4 17 76.5% 4 2 6 66.7% 2018 17 12 29 58.6% 3 5 8 37.5% 1 4 5 20.0%
27 2017 15 6 21 71.4% 12 6 18 66.7% 3 2 5 60.0% 2019 2 6 8 25.0% 1 1 2 50.0% — — — —
28 2018 27 14 41 65.9% 11 5 16 68.8% 5 2 7 71.4% 2020 1 1 2 50.0% — — — — — — — —
29 2019 15 8 23 65.2% 10 5 15 66.7% 4 1 5 80.0% 2021 0 1 1 0.0% — — — — — — — —
30 2020 — — — — 2 4 6 33.3% — — — — — — — — — — — — — — — — —
31 2021 17 10 27 63.0% 8 4 12 66.7% 2 2 4 50.0% — — — — — — — — — — — — —
33 2023 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
34 2024 6 6 12 50.0% 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — — — — — —
35 2025 6 6 12 50.0% 3 3 6 50.0% — — — — — — — — — — — — — — — — —
36 2026 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
Career — 288 151 439 65.6% 107 53 160 66.9% 41 28 69 59.4% — 91 108 199 45.7% 13 24 37 35.1% 13 24 37 35.1%

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 269/273 of Ryan Harrison'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 Ryan Harrison
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%
16 — —/— — — — — — — — — — 2008 2/2 3.0 3.0 54.1% 69.2% 41.5% 23.8% 83.3% 56.1% 38.8%
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% 2010 13/13 6.5 3.5 61.1% 70.0% 49.0% 63.6% 35.7% 62.0% 33.5%
19 2009 9/9 2.8 3.1 53.7% 64.6% 49.4% 39.4% 45.3% 57.3% 37.7% 2011 33/33 6.0 4.3 56.1% 67.7% 49.7% 53.1% 41.3% 59.9% 36.5%
20 2010 12/12 3.1 4.0 60.3% 64.3% 43.5% 45.8% 23.0% 56.4% 33.0% 2012 41/42 6.5 2.7 61.3% 71.1% 52.7% 62.0% 40.6% 64.2% 35.3%
21 2011 54/54 2.5 2.9 60.7% 68.5% 52.4% 59.5% 39.7% 62.0% 38.2% 2013 32/32 7.0 3.4 58.9% 70.4% 49.8% 61.7% 36.1% 61.9% 31.0%
22 2012 48/53 2.4 2.6 62.6% 70.0% 53.6% 55.2% 39.9% 63.6% 41.4% 2014 18/18 5.2 3.3 58.9% 69.1% 47.9% 62.2% 36.8% 60.4% 32.4%
23 2013 53/53 2.6 2.8 62.3% 68.9% 52.2% 55.7% 47.2% 62.6% 40.6% 2015 12/13 4.7 3.5 59.2% 67.9% 51.2% 54.2% 47.3% 61.0% 35.0%
24 2014 66/67 4.3 2.8 60.6% 73.4% 53.9% 63.1% 42.6% 65.6% 39.9% 2016 22/22 8.0 3.3 60.1% 75.6% 53.4% 64.2% 45.3% 66.7% 34.1%
25 2015 66/68 4.6 2.5 59.6% 74.7% 54.5% 62.3% 44.7% 66.6% 39.3% 2017 42/43 7.5 3.4 59.3% 71.7% 49.8% 59.7% 40.6% 62.7% 34.5%
26 2016 71/78 3.4 2.4 61.0% 72.3% 53.9% 64.1% 47.7% 65.1% 40.2% 2018 41/42 8.8 3.3 59.4% 74.6% 52.9% 63.3% 42.8% 65.5% 33.7%
27 2017 43/44 3.3 2.3 62.3% 71.9% 53.3% 64.2% 45.5% 64.9% 40.7% 2019 10/10 9.7 3.3 59.8% 76.7% 53.4% 62.5% 41.5% 66.9% 31.5%
28 2018 64/64 3.6 2.3 60.0% 71.3% 55.9% 60.0% 44.8% 65.2% 37.8% 2020 2/2 8.5 5.0 62.4% 72.0% 45.4% 87.5% 51.4% 62.0% 39.2%
29 2019 43/43 3.1 2.8 63.6% 70.1% 54.2% 51.2% 45.0% 64.3% 40.9% 2021 1/1 4.0 4.0 52.4% 77.3% 42.5% 50.0% 7.7% 60.7% 32.3%
30 2020 6/6 1.2 2.5 63.5% 62.2% 50.7% 57.8% 31.4% 58.0% 37.8% — —/— — — — — — — — — —
31 2021 37/43 2.5 2.0 64.2% 65.6% 55.3% 57.2% 45.2% 62.0% 38.5% — —/— — — — — — — — — —
33 2023 3/3 1.7 1.3 67.5% 73.8% 53.6% 52.8% 16.7% 67.2% 29.9% — —/— — — — — — — — — —
34 2024 15/16 2.1 1.7 66.6% 66.7% 55.0% 58.6% 39.7% 62.7% 36.1% — —/— — — — — — — — — —
35 2025 18/18 3.2 1.9 65.6% 68.6% 47.6% 53.2% 35.9% 61.9% 35.2% — —/— — — — — — — — — —
36 2026 2/2 2.0 1.0 60.0% 72.0% 55.5% 0.0% 11.0% 64.0% 32.0% — —/— — — — — — — — — —
Career — 643/668 3.3 2.6 61.5% 70.5% 53.3% 58.6% 43.3% 63.8% 39.1% — 269/273 7.0 3.4 59.3% 71.5% 50.9% 60.5% 41.0% 63.1% 34.1%

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 Kei Nishikori Ryan Harrison
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
16 — — — — — — — — — — — — — — — — 2008 1510 109.4 -0.50 -0.21 0.883 47.8% — — — 50.0% -0.50 — — — -0.23
17 2007 1576 116.9 -2.68 -0.02 0.904 48.6% +35 — — 38.9% -0.83 1–1 1–1 — +0.05 2009 1483 102.7 — — — — — — — — — — — — —
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 2010 1622 121.0 -1.95 -0.93 0.883 48.0% +22 — -44 36.4% -0.64 0–2 1–6 (14%) — +0.22
19 2009 1724 129.5 -3.16 +1.29 0.884 47.6% +12 — — 35.3% -1.06 — 1–0 — -0.98 2011 1731 142.1 -1.84 +0.18 0.911 48.2% +25 — -141 41.9% -0.56 8–5 (62%) 8–7 (53%) — -0.62
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 2012 1766 144.7 +0.78 -0.97 0.986 50.1% +4 -197 -19 48.1% -0.14 7–5 (58%) 9–10 (47%) — +0.17
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 2013 1733 141.2 -1.38 -3.31 0.814 47.6% +29 -163 -28 37.8% -0.88 4–7 (36%) 7–8 (47%) — -2.47
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 2014 1731 124.6 -2.06 -2.39 0.818 46.9% -6 — — 30.8% -1.03 0–4 (0%) 0–6 (0%) — -1.35
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 2015 1683 136.1 -1.56 -0.20 0.896 47.9% +56 — — 37.5% -0.97 3–4 (43%) 5–4 (56%) — -0.80
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 2016 1823 145.9 +1.68 +0.07 1.026 50.5% +50 — — 50.0% +0.13 3–3 (50%) 7–7 (50%) — -1.05
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 2017 1804 149.1 -0.84 -0.52 0.924 48.8% +34 -212 -220 44.7% -0.27 7–4 (64%) 6–14 (30%) — -0.44
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 2018 1765 140.3 +0.71 -0.88 0.975 49.6% +49 -187 -201 47.1% -0.02 9–6 (60%) 10–18 (36%) — +1.25
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 2019 1666 125.9 +0.37 -1.19 0.953 49.3% +45 — — 37.5% -0.33 0–2 0–3 (0%) — -0.37
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 2020 1648 107.2 -0.76 -0.96 1.030 52.5% — — — 60.0% +1.40 0–1 0–1 — +0.10
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 2021 1626 97.4 -2.02 -0.76 0.821 45.8% — — — 33.3% -1.33 0–1 — — +0.19
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 2022 1622 104.0 — — — — — — — — — — — — —
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 2023 1601 98.7 — — — — — — — — — — — — —
33 2023 1968 114.7 +1.39 +0.98 0.912 49.4% +49 — — 66.7% -0.17 — 3–0 (100%) — -0.03 — — — — — — — — — — — — — — — —
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 — — — — — — — — — — — — — — — —
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 — — — — — — — — — — — — — — — —
36 2026 1771 106.9 +1.40 -0.69 0.889 47.0% — — — 40.0% -0.60 1–0 0–1 — -0.11 — — — — — — — — — — — — — — — —
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 — 1893 144.8 -0.46 -1.00 0.923 48.9% +31 -195 -90 43.1% -0.38 41–44 (48%) 53–84 (39%) 92.6 -1.99

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.