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

Kei Nishikori vs Jack Sock H2H: 1-2

Jack Sock holds a 2–1 lead over Kei Nishikori in their ATP head-to-head. Across 3 main-draw meetings, Jack Sock leads 2–1 on hard courts. Most recently, Jack Sock won the 2017 Indian Wells Open quarterfinal 6-3 2-6 6-2.

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Kei Nishikori
Japan Age 36 Right-Handed 178 cm / 5'10"
H2H
1 – 2
3 main draw meetings
Jack Sock
USA Age 33 Right-Handed 191 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jack Sock #18 6-3 2-6 6-2 Kei Nishikori #5 Match data Mar 17, 2017* QF Indian Wells Open Masters 1000 Hard
Jack Sock #60 7-6(5) 6-4 Kei Nishikori #6 Match data Oct 8, 2014* R32 Shanghai Masters Masters 1000 Hard
Kei Nishikori #11 7-5 6-2 Jack Sock #94 Match data Aug 1, 2013* R32 Washington Open ATP 500 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
Jack Sock #808 #8 3,165 2,105 177 148 54.5% 0 1 0 0 3 4

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 Jack Sock
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 2007 3–5 37.5% #286 1,576 0 0 2010 0–1 0.0% — 1,458 0 0
18 2008 16–11 59.3% #63 1,758 0 1 2011 1–2 33.3% #381 1,489 0 0
19 2009 3–6 33.3% #418 1,723 0 1 2012 5–7 41.7% #150 1,601 0 0
20 2010 3–9 25.0% #98 1,735 0 1 2013 10–13 43.5% #102 1,696 0 0
21 2011 32–22 59.3% #25 1,923 0 1 2014 27–20 57.4% #42 1,893 0 0
22 2012 35–18 66.0% #19 2,007 0 2 2015 33–18 64.7% #26 1,984 0 1
23 2013 34–19 64.2% #17 1,946 0 3 2016 36–19 65.5% #23 2,024 0 1
24 2014 52–15 77.6% #5 2,211 0 7 2017 38–20 65.5% #8 1,986 0 4
25 2015 51–17 75.0% #8 2,153 0 10 2018 9–21 30.0% #106 1,715 0 4
26 2016 57–21 73.1% #5 2,183 0 11 2019 0–4 0.0% #253 1,634 0 4
27 2017 30–14 68.2% #22 2,080 0 11 2020 3–4 42.9% #253 1,725 0 4
28 2018 43–21 67.2% #9 2,107 0 11 2021 6–5 54.5% #145 1,775 0 4
29 2019 29–14 67.4% #13 2,002 0 12 2022 7–10 41.2% #131 1,747 0 4
30 2020 2–4 33.3% #41 1,912 0 12 2023 2–4 33.3% #671 1,716 0 4
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 Jack Sock
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% — — — — — — — — 2010 0 1 1 0.0% — — — — — — — —
18 2008 14 7 21 66.7% 0 1 1 0.0% 2 3 5 40.0% 2011 1 2 3 33.3% — — — — — — — —
19 2009 3 6 9 33.3% — — — — — — — — 2012 4 6 10 40.0% — — — — 1 1 2 50.0%
20 2010 2 5 7 28.6% 1 1 2 50.0% 0 3 3 0.0% 2013 7 10 17 41.2% 2 2 4 50.0% 1 1 2 50.0%
21 2011 22 14 36 61.1% 7 5 12 58.3% 3 3 6 50.0% 2014 18 15 33 54.5% 5 3 8 62.5% 4 2 6 66.7%
22 2012 21 11 32 65.6% 7 4 11 63.6% 7 3 10 70.0% 2015 21 12 33 63.6% 9 4 13 69.2% 3 2 5 60.0%
23 2013 24 13 37 64.9% 8 4 12 66.7% 2 2 4 50.0% 2016 26 13 39 66.7% 8 5 13 61.5% 2 1 3 66.7%
24 2014 37 11 48 77.1% 10 2 12 83.3% 5 2 7 71.4% 2017 33 15 48 68.8% 4 4 8 50.0% 1 1 2 50.0%
25 2015 33 12 45 73.3% 14 3 17 82.4% 4 2 6 66.7% 2018 7 14 21 33.3% 2 5 7 28.6% 0 2 2 0.0%
26 2016 40 15 55 72.7% 13 4 17 76.5% 4 2 6 66.7% 2019 0 4 4 0.0% — — — — — — — —
27 2017 15 6 21 71.4% 12 6 18 66.7% 3 2 5 60.0% 2020 2 3 5 40.0% 1 1 2 50.0% — — — —
28 2018 27 14 41 65.9% 11 5 16 68.8% 5 2 7 71.4% 2021 4 4 8 50.0% — — — — 2 1 3 66.7%
29 2019 15 8 23 65.2% 10 5 15 66.7% 4 1 5 80.0% 2022 4 7 11 36.4% 0 1 1 0.0% 3 2 5 60.0%
30 2020 — — — — 2 4 6 33.3% — — — — 2023 2 3 5 40.0% 0 1 1 0.0% — — — —
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% — 129 109 238 54.2% 31 26 57 54.4% 17 13 30 56.7%

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 322/325 of Jack Sock'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 Jack Sock
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% 2010 1/1 4.0 7.0 55.1% 63.3% 57.5% 54.5% 66.7% 60.7% 30.4%
18 2008 25/27 3.2 2.9 59.9% 69.1% 50.9% 57.2% 45.4% 61.8% 37.4% 2011 3/3 8.7 4.0 54.7% 65.2% 50.8% 31.0% 29.1% 59.4% 35.0%
19 2009 9/9 2.8 3.1 53.7% 64.6% 49.4% 39.4% 45.3% 57.3% 37.7% 2012 12/12 9.5 5.9 55.2% 71.3% 52.4% 69.4% 30.1% 63.0% 34.3%
20 2010 12/12 3.1 4.0 60.3% 64.3% 43.5% 45.8% 23.0% 56.4% 33.0% 2013 23/23 7.0 5.2 55.0% 75.0% 51.5% 60.4% 55.3% 64.5% 34.9%
21 2011 54/54 2.5 2.9 60.7% 68.5% 52.4% 59.5% 39.7% 62.0% 38.2% 2014 47/47 6.4 3.9 58.3% 76.5% 54.5% 68.2% 49.3% 67.5% 34.6%
22 2012 48/53 2.4 2.6 62.6% 70.0% 53.6% 55.2% 39.9% 63.6% 41.4% 2015 50/51 6.1 5.2 56.9% 75.9% 53.0% 63.5% 47.5% 66.2% 35.3%
23 2013 53/53 2.6 2.8 62.3% 68.9% 52.2% 55.7% 47.2% 62.6% 40.6% 2016 54/55 6.7 3.7 58.3% 75.8% 55.2% 67.7% 37.5% 67.2% 36.5%
24 2014 66/67 4.3 2.8 60.6% 73.4% 53.9% 63.1% 42.6% 65.6% 39.9% 2017 57/58 6.8 4.0 59.7% 72.8% 52.4% 56.9% 40.8% 64.7% 36.3%
25 2015 66/68 4.6 2.5 59.6% 74.7% 54.5% 62.3% 44.7% 66.6% 39.3% 2018 30/30 6.3 4.3 61.2% 73.0% 51.0% 58.6% 36.7% 64.5% 34.7%
26 2016 71/78 3.4 2.4 61.0% 72.3% 53.9% 64.1% 47.7% 65.1% 40.2% 2019 4/4 10.8 4.5 63.0% 70.4% 49.7% 44.3% 62.5% 62.7% 28.6%
27 2017 43/44 3.3 2.3 62.3% 71.9% 53.3% 64.2% 45.5% 64.9% 40.7% 2020 7/7 5.6 4.7 60.6% 69.1% 51.8% 48.5% 45.2% 62.2% 35.7%
28 2018 64/64 3.6 2.3 60.0% 71.3% 55.9% 60.0% 44.8% 65.2% 37.8% 2021 11/11 8.5 3.8 59.3% 75.1% 47.0% 61.1% 46.0% 63.8% 36.2%
29 2019 43/43 3.1 2.8 63.6% 70.1% 54.2% 51.2% 45.0% 64.3% 40.9% 2022 17/17 6.2 3.7 64.8% 70.1% 48.6% 58.5% 40.9% 62.8% 35.7%
30 2020 6/6 1.2 2.5 63.5% 62.2% 50.7% 57.8% 31.4% 58.0% 37.8% 2023 6/6 6.0 5.5 56.9% 72.8% 47.5% 70.6% 31.7% 61.8% 33.8%
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% — 322/325 6.7 4.3 58.6% 74.2% 52.6% 62.1% 43.2% 65.3% 35.4%

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 Jack Sock
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 2010 1458 94.9 -2.51 -1.84 0.774 45.3% — — — 25.0% -1.75 — — — +0.07
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 2011 1490 107.8 -1.04 +0.61 0.863 46.9% +9 — — 33.3% -1.00 — 0–1 — +0.29
19 2009 1724 129.5 -3.16 +1.29 0.884 47.6% +12 — — 35.3% -1.06 — 1–0 — -0.98 2012 1602 120.6 -0.99 -1.79 0.926 48.9% +18 — — 43.3% -0.67 2–3 (40%) 4–3 (57%) — +1.03
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 2013 1696 140.5 +0.25 -0.25 0.983 50.1% -7 -46 — 47.2% -0.25 1–6 (14%) 3–5 (38%) — -0.01
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 2014 1894 151.5 +2.13 +0.15 1.067 51.5% -36 -152 -188 56.5% +0.46 4–6 (40%) 10–11 (48%) — +0.38
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 2015 1985 166.3 +2.00 +0.71 1.042 51.0% -7 -65 -218 61.0% +0.61 11–5 (69%) 16–13 (55%) — -0.24
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 2016 2024 160.1 +2.86 +1.03 1.112 51.3% +3 -111 -222 60.1% +0.45 13–6 (68%) 17–13 (57%) — +1.63
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 2017 1987 164.2 +1.24 +1.03 1.028 50.3% +39 -114 — 58.8% +0.23 18–9 (67%) 22–9 (71%) — +1.66
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 2018 1716 137.8 +0.06 -1.43 0.976 49.6% +74 +66 — 43.4% -0.47 1–13 (7%) 8–7 (53%) — +2.03
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 2019 1634 108.9 -0.40 -1.52 0.767 45.8% +41 — — 9.1% -1.91 — 0–3 (0%) — +0.14
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 2020 1726 125.6 -1.79 -0.20 0.944 48.3% -53 — — 40.9% -0.73 2–1 (67%) 2–2 (50%) — -0.22
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 2021 1776 133.5 -0.49 -0.16 1.000 50.1% -49 — -56 53.6% +0.36 3–3 (50%) 2–5 (29%) — -0.96
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 2022 1747 131.6 -0.95 -0.13 0.959 49.5% -34 — +59 52.3% -0.23 1–6 (14%) 5–5 (50%) — -1.19
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 2023 1717 116.0 +0.17 -0.95 0.884 48.4% -15 — — 40.0% -0.73 1–2 (33%) 1–1 — -0.24
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 — — — — — — — — — — — — — — — —
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 +1.39 -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 — 2105 157.4 +1.18 +0.22 1.020 50.4% +5 -78 -125 53.7% +0.11 57–60 (49%) 90–78 (54%) 100.6 +1.35

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.