Event: Division 1 - Davy Trophy

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Opponent Rating Result
Li Jiping 94 ½ - ½
John A Clark 0 ½ - ½
Peter Morton 0 ½ - ½
Alan K Sutton 151 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

61 = (245 + 400 * (0 - 0)) / 4)

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