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 8, 2026, 3:32 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| May 10, 2014 | Newgy Cincinnati OpenTournament · View matches | 2,479 | 2,481 | +2+2 / 0 | 10W / 0L |
| May 4, 2014 | St. Louis OpenTournament · View matches | 2,492 | 2,479 | -13+0 / -13 | 2W / 1L |
| Apr 27, 2014 | DAC April OpenTournament · View matches | 2,490 | 2,492 | +2+2 / 0 | 7W / 0L |
| Mar 22, 2014 | Newgy Akron OpenTournament · View matches | 2,497 | 2,490 | -7+3 / -10 | 9W / 2L |
| Mar 9, 2014 | 2014 National Team TrialsTournament · View matches | 2,516 | 2,497 | -19+14 / -33 | 3W / 4L |
| Jan 19, 2014 | 2014 Butterfly Aurora CupTournament · View matches | 2,515 | 2,516 | +1+1 / 0 | 3W / 0L |
| Dec 21, 2013 | USATT NationalsTournament · View matches | 2,509 | 2,515 | +6+12 / -6 | 6W / 1L |
| Nov 9, 2013 | Sacramento Fall OpenTournament · View matches | 2,488 | 2,509 | +21+24 / -3 | 5W / 1L |
| Oct 27, 2013 | Butterfly MDTTC October OpenTournament · View matches | 2,484 | 2,488 | +4 | 4W / 1L |
| Oct 20, 2013 | 2013 Millcreek OpenTournament · View matches | 2,482 | 2,484 | +2+2 / 0 | 7W / 0L |
| Oct 12, 2013 | 2013 Newgy and Wang Vision Institute OpenTournament · View matches | 2,490 | 2,482 | -8+0 / -8 | 8W / 1L |
| Oct 5, 2013 | Westlake Fall OpenTournament · View matches | 2,489 | 2,490 | +1+1 / 0 | 6W / 0L |
| Sep 14, 2013 | September Newgy Giant Round RobinTournament · View matches | 2,489 | 2,489 | 0+0 / 0 | 9W / 0L |
| Aug 24, 2013 | Newgy Strongsville Summer Giant RRTournament · View matches | 2,480 | 2,489 | +9 | 8W / 0L |
| Jul 6, 2013 | US OpenTournament · View matches | 2,483 | 2,480 | -3+3 / -6 | 4W / 2L |
| Jun 15, 2013 | 2013 Newgy and Wang Vision Institute OpenTournament · View matches | 2,488 | 2,483 | -5 | 7W / 1L |
| Jun 8, 2013 | Newgy Akron OpenTournament · View matches | 2,486 | 2,488 | +2+2 / 0 | 12W / 0L |
| May 11, 2013 | Parma Heights Play and Eat OpenTournament · View matches | 2,485 | 2,486 | +1+1 / 0 | 6W / 0L |
| Apr 28, 2013 | DAC April Open TournamentTournament · View matches | 2,460 | 2,485 | +25 | 6W / 0L |
| Apr 21, 2013 | Potomac 2013 Spring OpenTournament · View matches | 2,495 | 2,460 | -35+0 / -35 | 3W / 1L |