Wins
16
Indexed tournament wins
Player record
O'Brien, Jason
Losses
13
Indexed tournament losses
Matches
29
Decisive results
Win rate
55.2%
Across indexed matches
Peak rating
1,550
Highest rating in the available history.
Biggest upset
Montgomery, Karl
Club JOOLA December Open · Dec 13, 2009 · +35 rating
Open →Biggest loss
Nicholas Nash
2019 Maryland State Championships · Jun 8, 2019 · -263 rating
Open →Most frequent opponent
Montgomery, Karl
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
6 tournament appearances · synced Aug 8, 2026, 2:18 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jun 8, 2019 | 2019 Maryland State ChampionshipsTournament · View matches | 1,488 | 1,473 | -15+1 / -16 | 4W / 1L |
| Dec 13, 2009 | Club JOOLA December OpenTournament · View matches | 1,499 | 1,488 | -11+13 / -24 | 8W / 3L |
| Feb 15, 2009 | Butterfly MDTTC February OpenTournament · View matches | 1,515 | 1,499 | -16+0 / -16 | 2W / 1L |
| Dec 14, 2008 | Club Joola December OpenTournament · View matches | 1,509 | 1,515 | +6+16 / -10 | 2W / 1L |
| Sep 21, 2008 | Club Joola September OpenTournament · View matches | 1,550 | 1,509 | -41+0 / -41 | 0W / 4L |
| Dec 11, 1994 | NTTC December OpenTournament · View matches | 1,551 | 1,550 | -1+0 / -1 | 0W / 3L |
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