Wins
2,248
Indexed tournament wins
Player record
Samson Dubina
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
Mark Hazinski
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
Don Hamilton
38 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
345 tournament appearances · synced Aug 9, 2026, 4:22 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 25, 2007 | 2007 Rochester Giant RRTournament · View matches | 2,479 | 2,479 | 0+0 / 0 | 12W / 0L |
| Dec 16, 2006 | U.S. National ChampionshipsTournament · View matches | 2,453 | 2,479 | +26+27 / -1 | 4W / 1L |
| Nov 26, 2006 | 2006 N. American Teams Open ChampionshipTournament · View matches | 2,414 | 2,453 | +39 | 12W / 9L |
| Oct 29, 2006 | 2006 Millcreek OpenTournament · View matches | 2,417 | 2,414 | -3+18 / -21 | 10W / 2L |
| Oct 14, 2006 | Rubber City OpenTournament · View matches | 2,381 | 2,417 | +36+36 / 0 | 6W / 0L |
| Oct 8, 2006 | 2006 SoCal OpenTournament · View matches | 2,421 | 2,381 | -40+0 / -40 | 3W / 2L |
| Aug 6, 2006 | 2006 Eastern OpenTournament · View matches | 2,419 | 2,421 | +2+13 / -11 | 3W / 3L |
| Jul 22, 2006 | TX Wesleyan Univ. July OpenTournament · View matches | 2,419 | 2,419 | 0+4 / -4 | 1W / 1L |
| Jun 18, 2006 | 2006 New Jersey OpenTournament · View matches | 2,428 | 2,419 | -9+4 / -13 | 2W / 3L |
| Jun 4, 2006 | Ohio ClosedTournament · View matches | 2,426 | 2,428 | +2+2 / 0 | 4W / 0L |
| May 13, 2006 | 2006 NA ChampionshipsTournament · View matches | 2,432 | 2,426 | -6+0 / -6 | 0W / 3L |
| Mar 12, 2006 | Quaker City Open & Meiklejohn Tournament · View matches | 2,442 | 2,432 | -10+2 / -12 | 3W / 3L |
| Mar 4, 2006 | Missouri Winter Games OpenTournament · View matches | 2,527 | 2,442 | -85+1 / -86 | 7W / 4L |
| Feb 19, 2006 | 2006 Western OpenTournament · View matches · USATT readjusted 2,447 → 2,498 | 2,447 | 2,527 | +29+43 / -14 | 7W / 2L |
| Dec 17, 2005 | 2005 US Nationals ChampionshipTournament · View matches | 2,451 | 2,447 | -4+9 / -13 | 4W / 2L |
| Nov 27, 2005 | 2005 N. American Teams Open ChTournament · View matches | 2,373 | 2,451 | +78 | 17W / 4L |
| Nov 6, 2005 | 2005 Millcreek OpenTournament · View matches | 2,359 | 2,373 | +14+19 / -5 | 13W / 1L |
| Oct 23, 2005 | Lafayette OpenTournament · View matches | 2,348 | 2,359 | +11+18 / -7 | 6W / 4L |
| Oct 16, 2005 | Western OpenTournament · View matches | 2,313 | 2,348 | +35+56 / -21 | 10W / 3L |
| Oct 8, 2005 | Canton Fall OpenTournament · View matches | 2,302 | 2,313 | +11+11 / 0 | 6W / 0L |