Wins
169
Indexed tournament wins
Player record
Zbigniew Mastylo
Losses
93
Indexed tournament losses
Matches
262
Decisive results
Win rate
64.5%
Across indexed matches
Peak rating
2,113
Highest rating in the available history.
Biggest upset
Leonid Kapustin
Missouri Closed- Show Me State · Jul 30, 1995 · +255 rating
Open →Biggest loss
Michael Verzino
St. Louis Gateway Open · Aug 9, 1999 · -474 rating
Open →Most frequent opponent
Parviz Mojaverian
6 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
28 tournament appearances · synced Aug 27, 2026, 2:23 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Aug 10, 2002 | Tallgrass Prairie OpenTournament · View matches | 1,736 | 1,737 | +1+7 / -6 | 4W / 3L |
| Jul 29, 2002 | Show-Me-State GamesTournament · View matches | 1,722 | 1,736 | +14+14 / 0 | 3W / 1L |
| Aug 9, 1999 | St. Louis Gateway OpenTournament · View matches | 1,771 | 1,722 | -49 | 2W / 4L |
| Jul 28, 1996 | Show-Me State GamesTournament · View matches | 1,781 | 1,771 | -10+0 / -10 | 0W / 2L |
| Feb 10, 1996 | Clinton Winter TournamentTournament · View matches | 1,819 | 1,781 | -38+8 / -46 | 1W / 2L |
| Sep 11, 1995 | Missouri Open AllStar TT ChampionshipTournament · View matches | 1,796 | 1,819 | +23 | 8W / 4L |
| Jul 30, 1995 | Missouri Closed- Show Me StateTournament · View matches · USATT readjusted 1,702 → 1,757 | 1,702 | 1,796 | +39+45 / -6 | 3W / 2L |
| Jun 4, 1995 | St. Louis Gateway OpenTournament · View matches | 1,708 | 1,702 | -6+7 / -13 | 1W / 4L |
21–28 of 28
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