Wins
274
Indexed tournament wins
Player record
Henry Kostkowski
Losses
267
Indexed tournament losses
Matches
541
Decisive results
Win rate
50.6%
Across indexed matches
Peak rating
1,533
Highest rating in the available history.
Biggest upset
Bell, TerriLee
Maryland Closed Championship · Jun 2, 2007 · +416 rating
Open →Biggest loss
Chen, Raymond D.
Maryland October Circuit Teams · Oct 28, 2000 · -903 rating
Open →Most frequent opponent
William Van Wright
24 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
72 tournament appearances · synced Aug 10, 2026, 4:19 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 29, 2000 | Maryland April Circuit TeamsTournament · View matches | 1,482 | 1,481 | -1 | 1W / 8L |
| Jul 11, 1999 | Maryland July CircuitTournament · View matches | 1,486 | 1,482 | -4 | 2W / 5L |
| Jun 6, 1999 | Maryland June CircuitTournament · View matches | 1,486 | 1,486 | 0+0 / 0 | 2W / 0L |
| Apr 11, 1999 | Maryland April CircuitTournament · View matches | 1,482 | 1,486 | +4+17 / -13 | 4W / 1L |
| Jan 23, 1999 | Maryland Circuit TeamsTournament · View matches | 1,458 | 1,482 | +24+32 / -8 | 4W / 3L |
| Nov 15, 1998 | MDTTC November OpenTournament · View matches | 1,494 | 1,458 | -36+0 / -36 | 0W / 2L |
| Feb 8, 1998 | Maryland CircuitTournament · View matches · USATT readjusted 1,338 → 1,464 | 1,338 | 1,494 | +30+67 / -37 | 9W / 2L |
| Oct 5, 1997 | Maryland October CircuitTournament · View matches | 1,349 | 1,338 | -11+12 / -23 | 4W / 2L |
| Sep 14, 1997 | Maryland Sept CircuitTournament · View matches | 1,365 | 1,349 | -16+6 / -22 | 2W / 2L |
| Jun 29, 1997 | Maryland Closed ChampionshipsTournament · View matches | 1,366 | 1,365 | -1+6 / -7 | 5W / 1L |
| Apr 13, 1997 | Maryland April CircuitTournament · View matches | 1,325 | 1,366 | +41+47 / -6 | 4W / 1L |
| Feb 9, 1997 | Maryland Feb CircuitTournament · View matches | 1,395 | 1,325 | -70+0 / -70 | 0W / 2L |
61–72 of 72
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