Player record

Qin, Jonathan

ID 92665CAMaleInactive
Current rating2,233
Back to ratingsCompare player

Wins

269

Indexed tournament wins

Losses

203

Indexed tournament losses

Matches

472

Decisive results

Win rate

57.0%

Across indexed matches

Peak rating

2,261

Highest rating in the available history.

Biggest upset

Ray Robertson

Best of the West Open · Sep 28, 2014 · +461 rating

Open →

Biggest loss

Liu, Audrey

2014 US National Championships · Dec 20, 2014 · -1119 rating

Open →

Most frequent opponent

Alex Wu

8 matches

Open →

Rating trajectory

Published rating movement across recorded events.

Tournament history

42 tournament appearances · synced Aug 7, 2026, 2:13 AM

DateTournamentRating inRating afterPoints changedRecord
Jun 10, 2017CTT June Annual TournamentTournament · View matches2,0161,992-24+6 / -303W / 4L
May 27, 2017San Diego Open III 10K TournamentTournament · View matches2,0262,016-10+21 / -318W / 5L
Apr 29, 2017American Legal Net Cup OpenTournament · View matches2,1102,026-84+3 / -875W / 6L
Mar 25, 2017Golden Western OpenTournament · View matches2,1252,110-15+6 / -213W / 4L
Mar 18, 2017Fourth Annual Laguna Hills High School OpenTournament · View matches2,0972,125+28+30 / -24W / 3L
Dec 12, 20162016 US OpenTournament · View matches2,0192,097+78+99 / -219W / 5L
Nov 13, 2016Trump's Time North West LA OpenTournament · View matches2,0692,019-50+0 / -501W / 3L
Sep 24, 20162016 Best of the WestTournament · View matches · USATT readjusted 1,994 → 2,0481,9942,069+21+53 / -3211W / 4L
Apr 30, 20162016 Arizona Closed TournamentTournament · View matches1,9831,994+11+27 / -165W / 2L
Feb 20, 20162016 Best of the West Open and Giant Round RobinTournament · View matches2,0271,983-44+8 / -529W / 5L
Dec 14, 2015US NationalsTournament · View matches2,0312,027-4+58 / -6210W / 7L
Dec 5, 20152015 Valley of the SunTournament · View matches2,0252,031+6+6 / 04W / 1L
Sep 27, 20152015 Best of the West and Giant Round RobinTournament · View matches · USATT readjusted 1,743 → 2,0111,7432,025+14+44 / -3010W / 4L
May 3, 20152015 Arizona ClosedTournament · View matches1,7181,743+25+35 / -107W / 5L
Feb 22, 20152015 Arizona Open and Giant Round RobinTournament · View matches1,3831,718+3356W / 3L
Dec 20, 20142014 US National ChampionshipsTournament · View matches1,6401,383-2574W / 10L
Dec 7, 2014Valley of the Sun OpenTournament · View matches1,6121,640+2811W / 4L
Sep 28, 2014Best of the West OpenTournament · View matches1,0571,612+55516W / 4L
Jun 15, 2014Ararat Open 2014Tournament · View matches9151,057+1429W / 2L
Apr 27, 2014Arizona ClosedTournament · View matches558915+35711W / 3L