Wins
8
Indexed tournament wins
Player record
Mattson, Ronald
Losses
11
Indexed tournament losses
Matches
19
Decisive results
Win rate
42.1%
Across indexed matches
Peak rating
1,681
Highest rating in the available history.
Biggest upset
Dan Dudley
Grand Rapids April Open · Apr 23, 1994 · +40 rating
Open →Biggest loss
Edgerton, Myron
Grand Rapids April Open · Apr 23, 1994 · -178 rating
Open →Most frequent opponent
Pell, Paul
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
4 tournament appearances · synced Aug 9, 2026, 2:20 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| May 25, 1997 | South Bend Memorial Day OpenTournament · View matches | 1,673 | 1,665 | -8+0 / -8 | 4W / 1L |
| Jul 27, 1996 | Schaumburg OpenTournament · View matches | 1,680 | 1,673 | -7+0 / -7 | 1W / 2L |
| Oct 28, 1995 | St. Louis Fall OpenTournament · View matches | 1,681 | 1,680 | -1+0 / -1 | 0W / 1L |
| Apr 23, 1994 | Grand Rapids April OpenTournament · View matches | 1,761 | 1,681 | -80+20 / -100 | 3W / 7L |
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