Event: Harrogate Evening League 2018-19

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Opponent Rating Result
Paul May 154 1 - 0
Jonathan Round 170 ½ - ½
Mike R Stokes 188 ½ - ½
Michael Johnson 132 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

361 = (644 + 400 * (2 - 0)) / 4)

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