Wins
224
Indexed tournament wins
Player record
Justin So
Losses
170
Indexed tournament losses
Matches
394
Decisive results
Win rate
56.9%
Across indexed matches
Peak rating
1,866
Highest rating in the available history.
Biggest upset
Nathan Kung
Junior Olympics/Junior Nationals · Jul 30, 2006 · +697 rating
Open →Biggest loss
Kevin Chiou
U.S. Open Championships · Jul 7, 2007 · -607 rating
Open →Most frequent opponent
Harsha Lokavarapu
7 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
42 tournament appearances · synced Aug 26, 2026, 2:24 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Oct 2, 2005 | 2005 Concord Cup Youth OpenTournament · View matches | 440 | 400 | -40 | 3W / 5L |
| Aug 6, 2005 | Sacramento Summer OpenTournament · View matches · Initial rating 440 | Unrated | 440 | — | 6W / 4L |
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