Wins
61
Indexed tournament wins
Player record
Kostkowski, Betty
Losses
336
Indexed tournament losses
Matches
397
Decisive results
Win rate
15.4%
Across indexed matches
Peak rating
963
Highest rating in the available history.
Biggest upset
Summers, Dan
Maryland State Closed · Mar 24, 2001 · +989 rating
Open →Biggest loss
Doctolero, Jordan
Maryland May Circuit - Giant R · May 26, 2001 · -593 rating
Open →Most frequent opponent
Michael Branch
55 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
61 tournament appearances · synced Aug 13, 2026, 2:38 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 9, 1997 | Maryland Feb CircuitTournament · View matches | 524 | 495 | -29 | 1W / 4L |
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