Event: D&DCL Div 2

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Opponent Rating Result
Andre Cockburn 123 1 - 0
Ronald S Harrison 104 1 - 0
Paul Williams 142 ½ - ½
Leslie J Fancourt 103 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

418 = (472 + 400 * (3 - 0)) / 4)

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