Event: B&DCL Div 3

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Opponent Rating Result
David Bryant 134 1 - 0
John E Harris 128 1 - 0
Mike Rutter 122 ½ - ½
Malcolm Day 110 0 - 1
Phil Wallace 124 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

284 = (618 + 400 * (3 - 1)) / 5)

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