Wins
3
Indexed tournament wins
Player record
Koss, Jeffrey
Losses
7
Indexed tournament losses
Matches
10
Decisive results
Win rate
30.0%
Across indexed matches
Peak rating
1,003
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
Heitschmidt, Wil
2 matches
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 10, 2026, 2:26 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 25, 2004 | Hutchinson 2004 Spring OpenTournament · View matches · Initial rating 1,003 | Unrated | 1,003 | — | 3W / 7L |
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