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Event: WMA Spring League Division 2

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Opponent Rating Result
Christopher J Evans 70 ½ - ½
AD (Tony) Williams 70 ½ - ½
Christopher J Evans 70 1 - 0
AD (Tony) Williams 70 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

170 = (280 + 400 * (1 - 0)) / 4)

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