Event: St Andrews Club Championship

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Opponent Rating Result
Ian Scott 110 1 - 0
Giles Dunn 150 ½ - ½
Andrew D Bettley 148 1 - 0
Bryan Wilson 101 1 - 0
N Charles Clayton 97 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

441 = (606 + 400 * (4 - 0)) / 5)

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