Event: Divison 3 - Batley-Meek Memorial Trophy

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Opponent Rating Result
Neil Todd 140 1 - 0
Geoffrey D Brown 148 0 - 1
Andrew Birtwhistle 130 1 - 0
John A Clark 143 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

340 = (561 + 400 * (3 - 1)) / 4)

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