Player record

Koh, Chason

ID 52588CAMaleInactive
Current rating1,667
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Wins

170

Indexed tournament wins

Losses

210

Indexed tournament losses

Matches

380

Decisive results

Win rate

44.7%

Across indexed matches

Peak rating

1,859

Highest rating in the available history.

Biggest upset

Chui, Lim Ming

2002 Meiklejohn Nat Sr TTT · Jun 9, 2002 · +362 rating

Open →

Biggest loss

Tentor, John

2004 USA Nationals Championship · Dec 18, 2004 · -578 rating

Open →

Most frequent opponent

Koshimoto, Hiroshi

8 matches

Open →

Rating trajectory

Published rating movement across recorded events.

Tournament history

53 tournament appearances · synced Aug 9, 2026, 2:20 AM

DateTournamentRating inRating afterPoints changedRecord
Apr 11, 19991999 Los Angeles TT Open ChampTournament · View matches1,6271,638+112W / 3L
Mar 28, 1999Colorado River OpenTournament · View matches1,6181,627+95W / 4L
Feb 14, 1999Golden Western States OpenTournament · View matches1,5921,618+26+36 / -104W / 3L
Dec 20, 19981998 USATT NationalsTournament · View matches1,5841,592+8+10 / -22W / 2L
Dec 13, 1998Loma Linda 3rd Annual Stiga WaTournament · View matches1,6171,584-33+0 / -330W / 4L
Nov 15, 1998San Diego Fall OpenTournament · View matches1,6231,617-6+22 / -282W / 3L
Oct 4, 1998Second Annual High Desert OpenTournament · View matches1,6431,623-20+0 / -200W / 2L
Sep 13, 19981998 Pacific Coast OpenTournament · View matches1,6441,643-14W / 4L
Aug 30, 1998AGBU TTTTournament · View matches1,6501,644-6+6 / -121W / 4L
Jun 21, 1998California State OpenTournament · View matches1,6561,650-6+7 / -134W / 4L
Jun 14, 1998Mieklejohn SeniorsTournament · View matches1,6641,656-8+2 / -101W / 3L
Mar 29, 1998Colorado River OpenTournament · View matches1,6841,664-20+5 / -255W / 3L
Sep 7, 1997Pacific Coast OpenTournament · View matches1,6751,684+93W / 4L