Event: Oxford Qualifier

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Opponent Rating Result
Gavin Wang 1460 0 - 1
Alexandrina Hudson 0 1 - 0
Archie McQuarrie 0 1 - 0
Htut Zay Ya 0 0 - 1
Daniel Ingham 1390 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

490 = (2850 + 400 * (2 - 3)) / 5)

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