Wins
754
Indexed tournament wins
Player record
Lonergan, Sean Michael
Losses
366
Indexed tournament losses
Matches
1,120
Decisive results
Win rate
67.3%
Across indexed matches
Peak rating
2,615
Highest rating in the available history.
Biggest upset
Jimmy Butler
US Nationals · Dec 18, 1994 · +319 rating
Open →Biggest loss
Prakash, Kesh
MDTTC September Open · Sep 21, 1997 · -574 rating
Open →Most frequent opponent
David Yong-Xiang Zhuang
36 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
189 tournament appearances · synced Aug 11, 2026, 2:16 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Sep 27, 1998 | MDTTC September OpenTournament · View matches | 2,526 | 2,526 | 0+0 / 0 | 2W / 0L |
| Sep 13, 1998 | Westfield September OpenTournament · View matches | 2,512 | 2,526 | +14+16 / -2 | 3W / 1L |
| Aug 30, 1998 | MDTTC August OpenTournament · View matches | 2,537 | 2,512 | -25+0 / -25 | 3W / 1L |
| Aug 16, 1998 | Sun TV OpenTournament · View matches | 2,526 | 2,537 | +11+17 / -6 | 5W / 2L |
| May 17, 1998 | Potomac Spring OpenTournament · View matches | 2,528 | 2,526 | -2+0 / -2 | 2W / 2L |
| May 10, 1998 | 34th St. Jospeh Valley Open/AlTournament · View matches | 2,514 | 2,528 | +14 | 5W / 1L |
| Apr 19, 1998 | National Collegiate Team ChampionshipTournament · View matches | 2,504 | 2,514 | +10+16 / -6 | 10W / 1L |
| Apr 11, 1998 | 1998 ACUITournament · View matches | 2,490 | 2,504 | +14 | 8W / 0L |
| Mar 20, 1998 | 1998 Eastern OpenTournament · View matches | 2,491 | 2,490 | -1+2 / -3 | 4W / 2L |
| Mar 15, 1998 | MDTTC March OpenTournament · View matches | 2,491 | 2,491 | 0+0 / 0 | 1W / 0L |
| Mar 7, 1998 | National Team TrialsTournament · View matches | 2,502 | 2,491 | -11+6 / -17 | 1W / 3L |
| Feb 15, 1998 | MDTTC February OpenTournament · View matches | 2,506 | 2,502 | -4+0 / -4 | 0W / 1L |
| Feb 1, 1998 | 3rd Annual Waterfront George Rocker MemorialTournament · View matches | 2,522 | 2,506 | -16+0 / -16 | 4W / 1L |
| Jan 25, 1998 | MATTC January OpenTournament · View matches | 2,530 | 2,522 | -8+0 / -8 | 4W / 1L |
| Jan 18, 1998 | MDTTC January OpenTournament · View matches | 2,531 | 2,530 | -1+0 / -1 | 2W / 1L |
| Dec 21, 1997 | US NationalsTournament · View matches | 2,532 | 2,531 | -1+2 / -3 | 2W / 1L |
| Nov 30, 1997 | US Open Teams ChampionshipsTournament · View matches | 2,549 | 2,532 | -17 | 8W / 5L |
| Nov 23, 1997 | Potomac Fall OpenTournament · View matches | 2,572 | 2,549 | -23+0 / -23 | 2W / 2L |
| Nov 2, 1997 | MDTTC November OpenTournament · View matches | 2,580 | 2,572 | -8+0 / -8 | 1W / 1L |
| Oct 26, 1997 | 1997 Southern OpenTournament · View matches | 2,584 | 2,580 | -4 | 3W / 1L |