Wins
5
Indexed tournament wins
Player record
Ko, Jeff
Losses
7
Indexed tournament losses
Matches
12
Decisive results
Win rate
41.7%
Across indexed matches
Peak rating
1,641
Highest rating in the available history.
Biggest upset
Not enough data
No qualifying upset available.
Biggest loss
Not enough data
No qualifying loss available.
Most frequent opponent
Agarwal, Vineet
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Rating history unavailable
More published rating points are needed before a trajectory can be drawn.
Tournament history
1 tournament appearances · synced Aug 14, 2026, 2:21 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 19, 1998 | National Collegiate Team ChampionshipTournament · View matches · Initial rating 1,641 | Unrated | 1,641 | — | 5W / 7L |
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