H2H data updated: 2026-09-07 00:00 UTC

A. O'Brien vs Alex Kim H2H: 0-1

Alex Kim holds a 1–0 lead over A. O'Brien in their ATP head-to-head. Across 1 main-draw meeting, Alex Kim leads 1–0 on hard courts. Most recently, Alex Kim won the 2001 Washington Open round of 64 3-6 6-2 6-4.

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

A. O'Brien
USA Age 56 Right-Handed 185 cm / 6'1"
H2H
0 – 1
1 main-draw meetings
Alex Kim
USA Age 47 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Alex Kim 3-6 6-2 6-4 A. O'Brien Match data Aug 15, 2001* R64 Washington Open ATP International Series Gold → modern equivalent 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
A. O'Brien — — — 1,500 0 1 0.0% 0 0 0 0 0 0
Alex Kim — — — 1,612 — — — 0 0 0 0 0 0

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 A. O'Brien Alex Kim
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
31 2001 0–1 0.0% — 1,483 0 0 — — — — — — —

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 A. O'Brien Alex Kim
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 — — — — — — — — — — — — — — — — 2000 1497 108.6 — — — — — — — 0.0% -4.00 — — — -0.21
22 — — — — — — — — — — — — — — — — 2001 1496 95.4 — — — — +24 — — 28.6% -1.86 1–0 — — +0.10
23 — — — — — — — — — — — — — — — — 2002 1535 120.1 — — — — +30 — — 39.5% -0.74 0–4 (0%) 2–2 (50%) 95.4 -0.18
24 — — — — — — — — — — — — — — — — 2003 1497 109.7 -3.08 -2.02 0.820 46.7% +5 — — 32.4% -1.03 2–4 (33%) 2–3 (40%) 96.7 +0.38
25 — — — — — — — — — — — — — — — — 2004 1471 98.5 -3.22 -3.51 0.982 49.5% — — — 33.3% -0.33 0–1 — — +0.15
31 2001 1483 98.7 — — — — — — — 33.3% -1.00 0–1 — — +0.15 — — — — — — — — — — — — — — — —
32 — — — — — — — — — — — — — — — — 2011 1463 100.3 — — — — — — — — — — — — —
Career — 1500 99.3 — — — — — — — 33.3% -1.00 0–1 — — +15.00 — 1613 112.8 -3.09 -2.13 0.834 46.9% +20 — — 34.1% -1.05 3–9 (25%) 4–5 (44%) 93.5 +0.73

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.