Wins
321
Indexed tournament wins
Player record
Koscielski, Daniel
Losses
568
Indexed tournament losses
Matches
889
Decisive results
Win rate
36.1%
Across indexed matches
Peak rating
1,368
Highest rating in the available history.
Biggest upset
Tim Boggan
2005 US Nationals Championship · Dec 17, 2005 · +557 rating
Open →Biggest loss
Popatia, Shahid
2000 Midwest & Illinois Closed · Jul 15, 2000 · -705 rating
Open →Most frequent opponent
Hagerstrand, Robert
14 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
109 tournament appearances · synced Aug 9, 2026, 2:25 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 5, 1995 | Dr. Wang Chinese New Year OpenTournament · View matches | 1,269 | 1,263 | -6+4 / -10 | 2W / 4L |
| Dec 18, 1994 | US NationalsTournament · View matches | 1,214 | 1,269 | +55+72 / -17 | 4W / 10L |
| Oct 21, 1994 | Huntsman World Senior GamesTournament · View matches | 1,214 | 1,214 | 0+0 / 0 | 0W / 2L |
| Sep 17, 1994 | Sears/Harvard Sports Table TenTournament · View matches | 1,278 | 1,214 | -64+5 / -69 | 1W / 8L |
| Aug 20, 1994 | Clyde Cauthen Memorial OpenTournament · View matches | 1,220 | 1,278 | +58+78 / -20 | 10W / 1L |
| Jul 16, 1994 | Cathrin "Back to Germany" OpenTournament · View matches | 1,191 | 1,220 | +29 | 3W / 4L |
| May 29, 1994 | St. Joseph Valley OpenTournament · View matches | 1,324 | 1,191 | -133 | 3W / 10L |
| May 14, 1994 | Schaumburg OpenTournament · View matches | 1,144 | 1,324 | +180 | 3W / 7L |
| Apr 9, 1994 | Schaumburg TT 8th Anniversary Tournament · View matches | 1,166 | 1,144 | -22+3 / -25 | 3W / 4L |
101–109 of 109
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