Wins
22
Indexed tournament wins
Player record
John Christoffer
Losses
40
Indexed tournament losses
Matches
62
Decisive results
Win rate
35.5%
Across indexed matches
Peak rating
1,673
Highest rating in the available history.
Biggest upset
Schulz, Kevin
Milwaukee March Madness · Mar 21, 2004 · +379 rating
Open →Biggest loss
Timothy Shelburn
2026 USATT Wisconsin State Championships · Apr 25, 2026 · -736 rating
Open →Most frequent opponent
Zhang, Jason
3 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
10 tournament appearances · synced Aug 9, 2026, 8:45 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jun 20, 2026 | 2026 USATT Wisconsin OpenState Open Championship · View matches | 1,395 | 1,290 | -105+0 / -105 | 0W / 6L |
| Apr 25, 2026 | 2026 USATT Wisconsin State ChampionshipsState Closed Championship · View matches | 1,408 | 1,395 | -13+0 / -13 | 0W / 2L |
| Apr 26, 2025 | 2025 USATT Wisconsin State ChampionshipsTournament · View matches | 1,528 | 1,408 | -120+0 / -120 | 0W / 3L |
| Apr 17, 2010 | 2010 Wisconsin State ChampionshipTournament · View matches | 1,525 | 1,528 | +3+5 / -2 | 4W / 6L |
| Dec 12, 2009 | 2009 Shorewood Fall OpenTournament · View matches | 1,616 | 1,525 | -91+0 / -91 | 0W / 8L |
| Apr 14, 2007 | 2007 Wisconsin Closed State ChTournament · View matches | 1,612 | 1,616 | +4 | 4W / 4L |
| Apr 22, 2006 | 2006 Closed Wisconsin State ChampionshipTournament · View matches | 1,673 | 1,612 | -61+1 / -62 | 2W / 4L |
| Apr 23, 2005 | 1st Shorewood OpenTournament · View matches | 1,643 | 1,673 | +30 | 4W / 4L |
| Mar 21, 2004 | Milwaukee March MadnessTournament · View matches · USATT readjusted 1,539 → 1,596 | 1,539 | 1,643 | +47+58 / -11 | 5W / 3L |
| May 24, 2003 | Milwaukee Stiga OpenTournament · View matches | 1,505 | 1,539 | +34+34 / 0 | 3W / 0L |
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