Event: Harrogate Evening League 2018-19

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Opponent Rating Result
Douglas McKerracher 146 1 - 0
Mark Daley 171 1 - 0
Mate Ther 167 1 - 0
Brian H Coop 159 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

461 = (643 + 400 * (3 - 0)) / 4)

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