National MasterO'Brien, MatthewFIDE ID 20591507Games1Wins1Draws5Losses21%ScorePeak rating2172Latest rating2094First seenAug 6, 2021Last seenJul 4, 2026Recent gamesDateWhiteResultBlackEventOpeningJul 4, 2026Rensch1–0ObrienRound 6: Rensch, Daniel - Obrien, MatthewQueen's Gambit Declined: Austrian DefenseJul 4, 2026Durarbayli1–0ObrienRound 2: Durarbayli, Vasif - Obrien, MatthewCatalan Opening: Open DefenseJul 3, 2026Sagar1–0ObrienRound 7: Sagar, Shah - Obrien, MatthewZukertort Opening: Queenside Fianchetto VariationJul 3, 2026Rozman0–1ObrienRound 5: Rozman, Levy - Obrien, MatthewQueen's Gambit Declined: Austrian DefenseJul 3, 2026Obrien0–1LiangRound 3: Obrien, Matthew - Liang, AwonderModern DefenseJul 3, 2026Troff½–½ObrienRound 2: Troff, Kayden - Obrien, MatthewQueen's Pawn Game: Krause VariationAug 6, 2021O'Brien0–1Liang2021 U.S. OpenCaro-Kann Defense: Two Knights Attack, Mindeno Variation