Event: St Andrews Club Championship

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Opponent Rating Result
David G Mills 136 ½ - ½
Steve Donoghue 80 1 - 0
Robin A Edwards 120 ½ - ½
Giles Dunn 134 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

118 = (470 + 400 * (1 - 1)) / 4)

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