Wins
42
Indexed tournament wins
Player record
John Jackman
Losses
34
Indexed tournament losses
Matches
76
Decisive results
Win rate
55.3%
Across indexed matches
Peak rating
1,727
Highest rating in the available history.
Biggest upset
Brockington, Marc
2011 June Philadelphia Open · Jun 5, 2011 · +371 rating
Open →Biggest loss
Shatadru Mazumder
Pennsylvania State Closed 2025 · Apr 11, 2025 · -544 rating
Open →Most frequent opponent
Leonid Polishuk
4 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
11 tournament appearances · synced Aug 10, 2026, 3:27 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| May 2, 2025 | 2025 Butterfly MAY OPEN & Giant RR @ Princeton PongTournament · View matches | 1,650 | 1,570 | -80+0 / -80 | 1W / 2L |
| Apr 11, 2025 | Pennsylvania State Closed 2025Tournament · View matches | 1,721 | 1,650 | -71 | 0W / 4L |
| Apr 21, 2013 | 2013 Pennsylvania State ChampionshipsTournament · View matches | 1,727 | 1,721 | -6+8 / -14 | 1W / 6L |
| Oct 27, 2012 | Manor Pumpkin Patch 2 Person TeamsTournament · View matches | 1,715 | 1,727 | +12+35 / -23 | 4W / 3L |
| Mar 10, 2012 | Trolley Car TTC March 2012 Philly OpenTournament · View matches | 1,615 | 1,715 | +100 | 5W / 5L |
| Feb 25, 2012 | Manor Open 2 Person TeamTournament · View matches · USATT readjusted 1,515 → 1,565 | 1,515 | 1,615 | +50+50 / 0 | 1W / 5L |
| Dec 11, 2011 | Trolley Car TT Club Philly OpenTournament · View matches | 1,532 | 1,515 | -17+8 / -25 | 4W / 1L |
| Oct 30, 2011 | Trolley Car TT Club Philly OpenTournament · View matches | 1,326 | 1,532 | +206 | 11W / 0L |
| Aug 14, 2011 | Trolley Car TT Club Philly OpenTournament · View matches | 1,335 | 1,326 | -9 | 4W / 4L |
| Jun 5, 2011 | 2011 June Philadelphia OpenTournament · View matches | 1,218 | 1,335 | +117 | 7W / 3L |
| Mar 13, 2011 | 2011 March Philadelphia OpenTournament · View matches · Initial rating 1,218 | Unrated | 1,218 | — | 4W / 1L |
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