Player record

Bjorn Oso

ID 223380NYMaleInactive

Bjorn Oso's USATT rating is 1,090.

USATT rating1,090
Back to ratingsCompare player

Wins

21

Indexed tournament wins

Losses

34

Indexed tournament losses

Matches

55

Decisive results

Win rate

38.2%

Across indexed matches

Peak rating

1,090

Highest rating in the available history.

Biggest upset

Max Cui-Stein

Westchester 2021 June Open · Jun 26, 2021 · +713 rating

Open →

Biggest loss

Baris Guney

Westchester November 2018 Open · Nov 17, 2018 · -56 rating

Open →

Most frequent opponent

Ayman Ibrahim

2 matches

Open →

Rating trajectory

Published rating movement across recorded events.

Tournament history

9 tournament appearances · synced Aug 28, 2026, 2:28 AM

DateTournamentRating inRating afterPoints changedRecord
Jun 26, 2021Westchester 2021 June OpenTournament · View matches · USATT readjusted 990 → 1,0409901,090+50+50 / 01W / 2L
Aug 24, 2019Westchester August 2019 OpenTournament · View matches964990+26+33 / -72W / 5L
May 25, 2019Westchester May 2019 OpenTournament · View matches963964+1+16 / -151W / 2L
Jan 26, 2019Westchester January 2019 OpenTournament · View matches · USATT readjusted 678 → 928678963+35+52 / -174W / 6L
Dec 29, 2018Westchester December 2018 OpenTournament · View matches652678+26+28 / -24W / 5L
Nov 17, 2018Westchester November 2018 OpenTournament · View matches654652-2+6 / -83W / 1L
Sep 29, 2018Westchester September 2018 OpenTournament · View matches636654+18+20 / -22W / 5L
Jul 28, 2018Westchester July 2018 OpenTournament · View matches · USATT readjusted 533 → 592533636+44+47 / -32W / 4L
May 26, 2018Westchester May 2018 OpenTournament · View matches · Initial rating 533Unrated533+3+8 / -52W / 4L