Event: Beverley Club Championship

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Opponent Rating Result
Bruce R Oliver 134 0 - 1
Stephen Philp 125 ½ - ½
David J Gibson 113 1 - 0
Graham Lee 117 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

122 = (489 + 400 * (1 - 1)) / 4)

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