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 |
|---|---|---|---|---|---|
| Jul 29, 2007 | 2007 Junior Olympics/Junior NaTournament · View matches | 1,486 | 1,540 | +54 | 4W / 6L |
| Jul 7, 2007 | U.S. Open ChampionshipsTournament · View matches | 1,514 | 1,486 | -28 | 17W / 7L |
| May 27, 2007 | Golden State OpenTournament · View matches | 1,496 | 1,514 | +18+31 / -13 | 7W / 2L |
| May 12, 2007 | Sacramento Spring OpenTournament · View matches · USATT readjusted 1,177 → 1,468 | 1,177 | 1,496 | +28+34 / -6 | 7W / 2L |
| Apr 15, 2007 | Butterfly Northern CA Spring OTournament · View matches | 1,294 | 1,177 | -117+0 / -117 | 2W / 7L |
| Feb 24, 2007 | Sacramento Winter OpenTournament · View matches | 1,307 | 1,294 | -13+5 / -18 | 3W / 4L |
| Feb 18, 2007 | Western OpenTournament · View matches · USATT readjusted 1,216 → 1,272 | 1,216 | 1,307 | +35+40 / -5 | 9W / 2L |
| Feb 11, 2007 | Lunar New Year's OpenTournament · View matches | 1,245 | 1,216 | -29 | 4W / 3L |
| Nov 5, 2006 | Concord Cup Youth OpenTournament · View matches | 1,292 | 1,245 | -47+0 / -47 | 3W / 4L |
| Oct 28, 2006 | Sacramento Fall OpenTournament · View matches · USATT readjusted 1,208 → 1,260 | 1,208 | 1,292 | +32+43 / -11 | 4W / 4L |
| Oct 22, 2006 | 2006 Stiga NA Tour FinalsTournament · View matches | 1,038 | 1,208 | +170 | 10W / 3L |
| Sep 3, 2006 | 2006 Berkeley OpenTournament · View matches | 1,040 | 1,038 | -2+33 / -35 | 10W / 4L |
| Jul 30, 2006 | Junior Olympics/Junior NationalsTournament · View matches | 899 | 1,040 | +141 | 7W / 3L |
| Jul 22, 2006 | Sacramento Summer OpenTournament · View matches | 684 | 899 | +215 | 6W / 3L |
| May 28, 2006 | 2006 Golden State OpenTournament · View matches | 647 | 684 | +37+39 / -2 | 5W / 3L |
| Apr 22, 2006 | Sacramento Spring OpenTournament · View matches | 557 | 647 | +90 | 7W / 3L |
| Feb 19, 2006 | 2006 Western OpenTournament · View matches | 535 | 557 | +22 | 2W / 4L |
| Feb 11, 2006 | Sacramento Winter OpenTournament · View matches | 508 | 535 | +27 | 3W / 5L |
| Dec 17, 2005 | 2005 US Nationals ChampionshipTournament · View matches | 458 | 508 | +50+50 / 0 | 1W / 8L |
| Oct 29, 2005 | Sacramento Fall OpenTournament · View matches | 400 | 458 | +58 | 5W / 2L |