Wins
15
Indexed tournament wins
Player record
Castle, John
Losses
63
Indexed tournament losses
Matches
78
Decisive results
Win rate
19.2%
Across indexed matches
Peak rating
616
Highest rating in the available history.
Biggest upset
Qu, Nina
Eastern Open on the 2004 Stiga · Jul 25, 2004 · +427 rating
Open →Biggest loss
Friend, Cheryl
Matthew J. Murad Memorial Open · Aug 22, 2004 · -152 rating
Open →Most frequent opponent
Chance Friend
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
12 tournament appearances · synced Aug 8, 2026, 2:24 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 3, 2005 | New Jersey Open on the N.A. ToTournament · View matches | 616 | 608 | -8+0 / -8 | 0W / 6L |
| Aug 22, 2004 | Matthew J. Murad Memorial OpenTournament · View matches | 608 | 616 | +8 | 3W / 5L |
| Jul 25, 2004 | Eastern Open on the 2004 StigaTournament · View matches · USATT readjusted 417 → 570 | 417 | 608 | +38+73 / -35 | 4W / 4L |
| Jun 13, 2004 | Stiga Open on the 2004 Stiga NA TourTournament · View matches | 417 | 417 | 0+0 / 0 | 0W / 3L |
| Mar 21, 2004 | Stiga 'Cary Cup' OpenTournament · View matches | 412 | 417 | +5 | 1W / 10L |
| Jun 15, 2003 | Stiga Open on the 2003 Stiga NTournament · View matches | 410 | 412 | +2+2 / 0 | 1W / 7L |
| Mar 30, 2003 | Quaker city OpenTournament · View matches | 402 | 410 | +8+8 / 0 | 1W / 9L |
| Sep 22, 2002 | Matthew Murad Mem OpenTournament · View matches | 375 | 402 | +27 | 2W / 5L |
| Jul 8, 2001 | 2001 US Open 3Tournament · View matches | 385 | 375 | -10+0 / -10 | 0W / 3L |
| Nov 9, 1997 | Maryland November CircuitTournament · View matches | 380 | 385 | +5+5 / 0 | 1W / 3L |
| Mar 23, 1997 | Waterfront TTC Bill Sharpe MemorialTournament · View matches | 380 | 380 | 0+0 / 0 | 0W / 3L |
| Apr 21, 1996 | '96 Penna State Championship CTournament · View matches · Initial rating 413 | Unrated | 413 | — | 2W / 5L |
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