Event: Division Two

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Opponent Rating Result
Graham Chase 0 1 - 0
Joao Santos 1979 ½ - ½
Ned Selchuk 0 1 - 0
George Chen 1163 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1086 = (3142 + 400 * (3 - 0)) / 4)

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