Event: B&DCL Div 4

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Opponent Rating Result
Graham Hillman 116 ½ - ½
John E Harris 120 ½ - ½
C James Fox 101 0 - 1
Christine A Roberts 95 0 - 1
Adam Jaggard 102 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

27 = (534 + 400 * (1 - 2)) / 5)

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