Wins
10
Indexed tournament wins
Player record
Zimmerman, Michael
Losses
9
Indexed tournament losses
Matches
19
Decisive results
Win rate
52.6%
Across indexed matches
Peak rating
1,343
Highest rating in the available history.
Biggest upset
Beaven, Darrell
St. Louis Gateway Open · Jun 4, 1995 · +148 rating
Open →Biggest loss
Brightup, Earl
St. Louis Gateway Open · Jun 4, 1995 · -271 rating
Open →Most frequent opponent
Beaven, Darrell
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
4 tournament appearances · synced Aug 8, 2026, 2:19 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 25, 1998 | St. Louis Spring OpenTournament · View matches | 1,343 | 1,342 | -1+2 / -3 | 1W / 2L |
| Jun 4, 1995 | St. Louis Gateway OpenTournament · View matches | 1,275 | 1,343 | +68 | 7W / 4L |
| Oct 22, 1994 | St. Louis Fall OpenTournament · View matches | 1,294 | 1,275 | -19+0 / -19 | 0W / 2L |
| Jul 25, 1994 | Show-Me State Games, Missouri Tournament · View matches | 1,295 | 1,294 | -1 | 2W / 1L |
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