Wins
9
Indexed tournament wins
Player record
Yamamoto, Ken
Losses
6
Indexed tournament losses
Matches
15
Decisive results
Win rate
60.0%
Across indexed matches
Peak rating
869
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
Shehadeh, John
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
2 tournament appearances · synced Aug 9, 2026, 2:30 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 10, 2004 | Schaumburg OpenTournament · View matches | 869 | 869 | 0+0 / 0 | 1W / 3L |
| Feb 21, 2004 | Schaumburg RR OpenTournament · View matches · Initial rating 869 | Unrated | 869 | — | 8W / 3L |
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