Wins
6
Indexed tournament wins
Player record
Ethan Zook
Losses
22
Indexed tournament losses
Matches
28
Decisive results
Win rate
21.4%
Across indexed matches
Peak rating
546
Highest rating in the available history.
Biggest upset
Betty Kostkowski
Maryland Giant RR · Feb 23, 2002 · +59 rating
Open →Biggest loss
Rodney Aaron
Maryland Giant RR · Feb 23, 2002 · -231 rating
Open →Most frequent opponent
Beaston, George
2 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
3 tournament appearances · synced Aug 12, 2026, 4:33 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Apr 6, 2002 | West Salem U-1000 RRTournament · View matches | 535 | 546 | +11 | 3W / 5L |
| Feb 23, 2002 | Maryland Giant RRTournament · View matches | 531 | 535 | +4 | 2W / 9L |
| Jan 14, 2001 | PA - MATTC January OpenTournament · View matches · Initial rating 531 | Unrated | 531 | — | 1W / 8L |
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