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 |
|---|---|---|---|---|---|
| Sep 26, 2015 | Sacramento September OpenTournament · View matches | 1,748 | 1,748 | 0+0 / 0 | 0W / 1L |
| Sep 18, 2010 | Sacramento Summer SpectacularTournament · View matches | 1,700 | 1,748 | +48+56 / -8 | 4W / 5L |
| Jul 4, 2009 | US Open TT ChampionshipTournament · View matches | 1,753 | 1,700 | -53+4 / -57 | 2W / 9L |
| May 24, 2009 | Golden State OpenTournament · View matches | 1,799 | 1,753 | -46+6 / -52 | 3W / 4L |
| May 10, 2009 | ICC California State OpenTournament · View matches | 1,791 | 1,799 | +8 | 5W / 2L |
| Mar 14, 2009 | Sacramento Winter OpenTournament · View matches | 1,809 | 1,791 | -18+0 / -18 | 1W / 3L |
| Feb 22, 2009 | Western Open on the JOOLA NA TourTournament · View matches | 1,830 | 1,809 | -21+16 / -37 | 7W / 6L |
| Dec 20, 2008 | USATT Nationals ChampionshipsTournament · View matches | 1,866 | 1,830 | -36+38 / -74 | 8W / 5L |
| Oct 26, 2008 | Concord Cup Youth OpenTournament · View matches | 1,712 | 1,866 | +154 | 8W / 2L |
| Sep 20, 2008 | Sacramento Summer OpenTournament · View matches | 1,747 | 1,712 | -35 | 5W / 5L |
| Aug 31, 2008 | 2008 Life West OpenTournament · View matches | 1,743 | 1,747 | +4+26 / -22 | 9W / 10L |
| Jul 5, 2008 | U.S. OpenTournament · View matches | 1,743 | 1,743 | 0+14 / -14 | 6W / 3L |
| May 31, 2008 | Sacramento Spring OpenTournament · View matches | 1,736 | 1,743 | +7 | 7W / 3L |
| May 25, 2008 | Golden State OpenTournament · View matches | 1,735 | 1,736 | +1+10 / -9 | 2W / 4L |
| Mar 22, 2008 | 2008 Western OpenTournament · View matches | 1,652 | 1,735 | +83 | 7W / 3L |
| Nov 3, 2007 | Sacramento Fall OpenTournament · View matches | 1,667 | 1,652 | -15+24 / -39 | 3W / 4L |
| Oct 28, 2007 | Concord Cup Youth TournamentTournament · View matches · USATT readjusted 1,515 → 1,643 | 1,515 | 1,667 | +24+30 / -6 | 7W / 2L |
| Oct 21, 2007 | 2007 JOOLA North American TourTournament · View matches | 1,557 | 1,515 | -42+10 / -52 | 3W / 4L |
| Sep 16, 2007 | 2007 Berkeley OpenTournament · View matches | 1,549 | 1,557 | +8+36 / -28 | 8W / 5L |
| Aug 25, 2007 | Sacramento Summer OpenTournament · View matches | 1,540 | 1,549 | +9+16 / -7 | 4W / 2L |
1–20 of 42
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