Event: OTB Club Championship

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Opponent Rating Result
Laurence Duffy 1535 0 - 1
Ivan Hutcheson 1489 0 - 1
Jean L Mara 1102 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

975 = (4126 + 400 * (0 - 3)) / 3)

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