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

Christopher O'Connell vs John Isner H2H: 0-1

John Isner holds a 1–0 lead over Christopher O'Connell in their ATP head-to-head. Across 1 main-draw meeting, John Isner leads 1–0 on hard courts. Most recently, John Isner won the 2021 Atlanta quarterfinal 7-6(5) 6-7(3) 6-4.

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Christopher O'Connell
Australia Age 32 Right-Handed 183 cm / 6'0"
H2H
0 – 1
1 main draw meetings
John Isner
USA Age 41 Right-Handed 208 cm / 6'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
John Isner #35 7-6(5) 6-7(3) 6-4 Christopher O'Connell #132 Match data Jul 31, 2021* QF Atlanta 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
Christopher O'Connell #106 #53 930 1,820 65 99 39.6% 0 0 0 0 0 0
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 Christopher O'Connell John Isner
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
22 — — — — — — — 2007 8–5 61.5% #106 1,656 0 0
23 2017 0–2 0.0% #393 1,524 0 0 2008 11–19 36.7% #144 1,607 0 0
24 — — — — — — — 2009 27–18 60.0% #34 1,829 0 0
25 — — — — — — — 2010 38–20 65.5% #19 1,884 0 1
26 2020 1–2 33.3% #120 1,510 0 0 2011 34–19 64.2% #18 2,020 0 3
27 2021 4–9 30.8% #175 1,660 0 0 2012 41–19 68.3% #14 1,977 0 5
28 2022 6–12 33.3% #78 1,708 0 0 2013 38–22 63.3% #14 1,984 0 7
29 2023 19–23 45.2% #68 1,719 0 0 2014 37–21 63.8% #19 1,935 0 9
30 2024 17–22 43.6% #64 1,741 0 0 2015 45–23 66.2% #11 2,028 0 10
31 2025 13–21 38.2% #116 1,658 0 0 2016 30–20 60.0% #19 2,021 0 10
32 2026 5–8 38.5% #106 1,672 0 0 2017 36–21 63.2% #17 1,985 0 12
33 — — — — — — — 2018 32–22 59.3% #10 1,958 0 14
34 — — — — — — — 2019 29–17 63.0% #19 1,922 0 15
35 — — — — — — — 2020 10–7 58.8% #25 1,845 0 15
36 — — — — — — — 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 Christopher O'Connell 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 %
22 — — — — — — — — — — — — — 2007 8 4 12 66.7% — — — — 0 1 1 0.0%
23 2017 0 2 2 0.0% — — — — — — — — 2008 9 12 21 42.9% 1 3 4 25.0% 1 4 5 20.0%
24 — — — — — — — — — — — — — 2009 25 17 42 59.5% 2 1 3 66.7% — — — —
25 — — — — — — — — — — — — — 2010 29 13 42 69.0% 8 6 14 57.1% 1 1 2 50.0%
26 2020 1 2 3 33.3% — — — — — — — — 2011 26 13 39 66.7% 2 5 7 28.6% 6 1 7 85.7%
27 2021 4 6 10 40.0% 0 2 2 0.0% 0 1 1 0.0% 2012 27 12 39 69.2% 6 5 11 54.5% 8 2 10 80.0%
28 2022 5 9 14 35.7% 1 2 3 33.3% 0 1 1 0.0% 2013 26 14 40 65.0% 8 5 13 61.5% 4 3 7 57.1%
29 2023 7 12 19 36.8% 8 8 16 50.0% 4 3 7 57.1% 2014 27 14 41 65.9% 6 5 11 54.5% 4 2 6 66.7%
30 2024 17 17 34 50.0% 0 4 4 0.0% 0 1 1 0.0% 2015 31 14 45 68.9% 10 6 16 62.5% 4 3 7 57.1%
31 2025 10 13 23 43.5% 3 5 8 37.5% 0 3 3 0.0% 2016 22 13 35 62.9% 5 5 10 50.0% 3 2 5 60.0%
32 2026 5 7 12 41.7% 0 1 1 0.0% — — — — 2017 23 14 37 62.2% 7 4 11 63.6% 6 3 9 66.7%
33 — — — — — — — — — — — — — 2018 20 16 36 55.6% 7 5 12 58.3% 5 1 6 83.3%
34 — — — — — — — — — — — — — 2019 24 16 40 60.0% — — — — 5 1 6 83.3%
35 — — — — — — — — — — — — — 2020 9 6 15 60.0% 1 1 2 50.0% — — — —
36 — — — — — — — — — — — — — 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 — 49 68 117 41.9% 12 22 34 35.3% 4 9 13 30.8% — 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 162/164 of Christopher O'Connell'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 Christopher O'Connell 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%
22 — —/— — — — — — — — — — 2007 13/13 19.6 3.1 67.2% 78.2% 59.4% 65.5% 19.8% 71.9% 26.6%
23 2017 2/2 4.0 3.5 62.1% 64.7% 50.0% 65.7% 6.7% 59.0% 26.2% 2008 29/30 15.0 3.4 66.9% 77.1% 52.3% 60.0% 26.1% 68.8% 27.4%
24 — —/— — — — — — — — — — 2009 45/45 14.5 2.5 67.1% 75.0% 57.4% 65.9% 29.5% 69.1% 30.0%
25 — —/— — — — — — — — — — 2010 58/58 17.8 2.3 69.1% 76.5% 55.9% 68.0% 39.3% 70.1% 29.9%
26 2020 3/3 7.7 2.0 63.9% 68.4% 49.5% 72.2% 42.9% 61.5% 32.9% 2011 53/53 15.2 2.8 69.2% 78.0% 55.6% 62.5% 40.1% 71.2% 31.5%
27 2021 13/13 8.2 1.2 62.9% 75.2% 52.0% 60.8% 40.3% 66.5% 32.1% 2012 56/60 16.7 2.2 67.9% 78.2% 57.0% 72.2% 33.2% 71.6% 31.1%
28 2022 18/18 8.3 2.6 63.4% 71.2% 48.3% 61.9% 32.8% 62.7% 34.7% 2013 60/60 16.3 1.7 67.7% 79.4% 57.8% 66.5% 33.7% 72.2% 31.1%
29 2023 42/42 6.9 1.9 62.0% 73.1% 50.7% 61.9% 32.8% 64.6% 34.0% 2014 57/58 17.4 1.8 67.8% 79.1% 57.8% 73.0% 27.3% 72.1% 30.2%
30 2024 39/39 7.5 2.0 59.5% 73.7% 50.7% 61.7% 34.2% 64.3% 33.4% 2015 68/68 18.5 1.8 70.3% 80.2% 58.6% 74.8% 37.5% 73.8% 29.6%
31 2025 33/34 6.3 1.8 59.5% 68.7% 49.2% 60.6% 30.5% 60.5% 34.2% 2016 50/50 23.2 2.7 69.2% 82.4% 55.3% 68.3% 35.9% 73.9% 30.7%
32 2026 12/13 8.6 1.5 56.7% 71.8% 47.5% 57.3% 39.4% 61.2% 31.1% 2017 57/57 19.7 2.2 70.6% 80.6% 56.5% 63.6% 41.2% 73.5% 29.1%
33 — —/— — — — — — — — — — 2018 54/54 22.4 2.4 69.1% 81.3% 56.7% 70.1% 30.6% 73.7% 29.7%
34 — —/— — — — — — — — — — 2019 46/46 21.8 1.7 71.0% 81.4% 58.6% 70.1% 34.2% 74.7% 29.8%
35 — —/— — — — — — — — — — 2020 17/17 21.9 3.5 71.5% 78.6% 54.9% 84.1% 25.0% 72.2% 28.8%
36 — —/— — — — — — — — — — 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 — 162/164 7.3 1.9 60.8% 72.0% 50.0% 61.4% 33.6% 63.2% 33.5% — 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 Christopher O'Connell 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
21 2015 1495 104.2 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
22 — — — — — — — — — — — — — — — — 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 2017 1525 115.5 -0.12 -0.17 0.638 43.9% — — — 16.7% -2.17 0–1 1–1 — -0.10 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 2018 1518 105.8 — — — — — — — — — — — — — 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 2019 1494 99.2 — — — — — — — — — — — — — 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 2020 1510 117.0 +2.22 +2.41 0.854 48.6% +35 — — 36.4% -0.55 — 1–1 — -0.18 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 2021 1661 126.7 +0.93 -2.95 0.959 49.2% -16 — — 43.9% -0.29 2–7 (22%) 7–6 (54%) — -0.33 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 2022 1708 136.6 -1.02 -1.54 0.930 48.9% -4 -132 — 42.6% -0.43 1–5 (17%) 8–6 (57%) — -0.26 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 2023 1720 137.5 +0.91 -1.80 0.960 49.3% -32 -99 +28 45.4% -0.32 7–8 (47%) 16–12 (57%) — -1.95 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 2024 1742 145.4 -0.18 -0.88 0.933 49.0% +1 -145 — 45.7% -0.29 2–4 (33%) 7–8 (47%) — -1.68 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 2025 1659 134.1 -2.50 -1.21 0.866 47.8% +93 -88 -11 38.7% -0.73 4–4 (50%) 5–9 (36%) — -0.58 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 2026 1672 124.8 -2.11 -2.71 0.800 46.8% +75 — — 33.3% -1.22 1–2 (33%) 4–3 (57%) — -0.23 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 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 — 1821 140.3 -0.47 -1.49 0.911 48.6% +20 -105 +16 42.3% -0.49 17–31 (35%) 49–46 (52%) 98.0 -3.28 — 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.