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 |
|---|---|---|---|---|---|
| Aug 22, 1999 | Macy Block Open (formerly Sun Tournament · View matches | 1,994 | 2,014 | +20+22 / -2 | 8W / 2L |
| Aug 6, 1999 | 1999 AAU/NationalsTournament · View matches | 1,881 | 1,987 | +106 | 3W / 2L |
| Aug 6, 1999 | 1999 AAU/Jr. Olympic TeamsTournament · View matches | 1,987 | 1,994 | +7+8 / -1 | 3W / 1L |
| Aug 6, 1999 | 1999 AAU/Jr. Olympic GamesTournament · View matches | 1,892 | 1,881 | -11+2 / -13 | 3W / 1L |
| May 30, 1999 | St. Joseph Valley OpenTournament · View matches | 1,870 | 1,892 | +22 | 6W / 6L |
| May 23, 1999 | Portsmouth InvitationalTournament · View matches | 1,829 | 1,870 | +41+54 / -13 | 2W / 5L |
| Apr 10, 1999 | Dayton Giant RR OpenTournament · View matches | 1,801 | 1,829 | +28 | 3W / 5L |
| Feb 6, 1999 | Columbus RR OpenTournament · View matches | 1,833 | 1,801 | -32 | 4W / 5L |
| Jan 24, 1999 | 1999 Cleveland OpenTournament · View matches | 1,815 | 1,833 | +18 | 12W / 4L |
| Dec 5, 1998 | Cincinnati Giant RR OpenTournament · View matches · USATT readjusted 1,614 → 1,796 | 1,614 | 1,815 | +19+27 / -8 | 3W / 4L |
| Oct 18, 1998 | 1998 Millcreek OpenTournament · View matches | 1,703 | 1,614 | -89 | 5W / 6L |
| Aug 9, 1998 | 1998 AAU Junior OlympicsTournament · View matches | 1,782 | 1,698 | -84+16 / -100 | 1W / 2L |
| Aug 8, 1998 | 1998 Jr. NationalsTournament · View matches | 1,698 | 1,703 | +5+5 / 0 | 2W / 2L |
| Jul 19, 1998 | 1998 Ohio GamesTournament · View matches | 1,783 | 1,782 | -1 | 5W / 3L |
| May 23, 1998 | Cincinnati Giant RR OpenTournament · View matches · USATT readjusted 1,662 → 1,736 | 1,662 | 1,783 | +47+57 / -10 | 3W / 5L |
| Apr 26, 1998 | 1998 Ohio ChampionshipsTournament · View matches | 1,452 | 1,662 | +210 | 9W / 0L |
| Mar 14, 1998 | March Madness Canton OpenTournament · View matches | 1,441 | 1,452 | +11 | 7W / 3L |
| Jan 18, 1998 | Cleveland Winter OpenTournament · View matches | 1,287 | 1,441 | +154 | 9W / 8L |
| Nov 8, 1997 | Dayton TABL 10S OpenTournament · View matches | 1,327 | 1,287 | -40+0 / -40 | 2W / 4L |
| Oct 26, 1997 | Buckeye Honda Lancaster Open RTournament · View matches | 1,188 | 1,327 | +139 | 8W / 0L |