Wins
2,248
Indexed tournament wins
Player record
Dubina, Samson
Losses
711
Indexed tournament losses
Matches
2,959
Decisive results
Win rate
76.0%
Across indexed matches
Peak rating
2,614
Highest rating in the available history.
Biggest upset
Hazinski, Mark
1999 AAU/Nationals · Aug 6, 1999 · +352 rating
Open →Biggest loss
Bisker, Oleg
1998 AAU Junior Olympics · Aug 9, 1998 · -590 rating
Open →Most frequent opponent
Hamilton, Don
38 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
345 tournament appearances · synced Aug 12, 2026, 2:16 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 27, 1997 | Ohio State ChampionshipsTournament · View matches | 1,189 | 1,188 | -1+13 / -14 | 3W / 7L |
| Mar 22, 1997 | Sun TV Canton OpenTournament · View matches | 939 | 1,189 | +250 | 10W / 3L |
| Jan 19, 1997 | Cleveland Winter OpenTournament · View matches | 852 | 939 | +87 | 4W / 6L |
| May 5, 1996 | Ohio ClosedTournament · View matches | 878 | 852 | -26+0 / -26 | 1W / 5L |
| Apr 21, 1996 | Columbus April Warmup TournameTournament · View matches · Initial rating 878 | Unrated | 878 | — | 3W / 4L |
341–345 of 345
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