Event: D&DCL Div 1

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Opponent Rating Result
Michael D Johnson 170 ½ - ½
Alan F Downham 162 ½ - ½
Alan F Downham 162 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

298 = (494 + 400 * (1 - 0)) / 3)

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