Wins
1
Indexed tournament wins
Player record
O'Donnell, Michael J.
Losses
6
Indexed tournament losses
Matches
7
Decisive results
Win rate
14.3%
Across indexed matches
Peak rating
504
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
Allard, David F.
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
2 tournament appearances · synced Aug 11, 2026, 2:32 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jan 11, 1997 | Bay State Holiday OpenTournament · View matches | 500 | 504 | +4 | 1W / 5L |
| Nov 16, 1996 | Bay State Under 2000 OpenTournament · View matches · Initial rating 500 | Unrated | 500 | — | 0W / 1L |
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