Wins
25
Indexed tournament wins
Player record
Donald K Zacharias
Losses
19
Indexed tournament losses
Matches
44
Decisive results
Win rate
56.8%
Across indexed matches
Peak rating
1,250
Highest rating in the available history.
Biggest upset
Burns, John Marshall
South Bend Open · Feb 1, 1998 · +161 rating
Open →Biggest loss
Ronald Jackson
Buckeye Open · Mar 24, 2002 · -194 rating
Open →Most frequent opponent
Daniel McFarland
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
5 tournament appearances · synced Aug 10, 2026, 4:19 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 6, 2003 | Michigan Closed TT ChampionshipTournament · View matches | 1,250 | 1,236 | -14 | 2W / 4L |
| Apr 21, 2002 | Michigan Closed TT ChampionshipTournament · View matches | 1,201 | 1,250 | +49 | 4W / 4L |
| Mar 24, 2002 | Buckeye OpenTournament · View matches | 1,227 | 1,201 | -26 | 5W / 5L |
| Feb 1, 1998 | South Bend OpenTournament · View matches | 1,063 | 1,227 | +164 | 8W / 1L |
| Apr 6, 1997 | 1997 Michigan State ChampionshTournament · View matches · Initial rating 1,063 | Unrated | 1,063 | — | 6W / 5L |
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