Wins
2
Indexed tournament wins
Player record
Yamamoto, Mari
Losses
3
Indexed tournament losses
Matches
5
Decisive results
Win rate
40.0%
Across indexed matches
Peak rating
2,260
Highest rating in the available history.
Biggest upset
Tian, Maggie
2011 US Open · Jul 4, 2011 · +181 rating
Open →Biggest loss
Not enough data
No qualifying loss available.
Most frequent opponent
Chih, De-rong
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
3 tournament appearances · synced Aug 8, 2026, 2:14 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jul 5, 2014 | US OpenTournament · View matches | 2,255 | 2,260 | +5+6 / -1 | 1W / 1L |
| Jul 4, 2011 | 2011 US OpenTournament · View matches | 2,220 | 2,255 | +35+35 / 0 | 1W / 1L |
| Jul 3, 2010 | 2010 US OpenTournament · View matches · Initial rating 2,220 | Unrated | 2,220 | — | 0W / 1L |
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