Wins
3
Indexed tournament wins
Player record
Koo, David
Losses
5
Indexed tournament losses
Matches
8
Decisive results
Win rate
37.5%
Across indexed matches
Peak rating
1,388
Highest rating in the available history.
Biggest upset
Cohen, Ed
Lechi/West Covina TTC Open · Feb 20, 2005 · +139 rating
Open →Biggest loss
Not enough data
No qualifying loss available.
Most frequent opponent
Burris, Theo
1 match
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
2 tournament appearances · synced Aug 12, 2026, 2:24 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 20, 2005 | Lechi/West Covina TTC OpenTournament · View matches | 1,363 | 1,388 | +25+31 / -6 | 2W / 3L |
| Mar 28, 2004 | Golden Western StatesTournament · View matches · Initial rating 1,363 | Unrated | 1,363 | -2+3 / -5 | 1W / 2L |
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