Event: Harrogate Evening League 2018-19

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Opponent Rating Result
David Harasym 138 ½ - ½
Andrew Zigmond 129 0 - 1
Alan Riddle 79 1 - 0
Paul R Chambers 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

187 = (346 + 400 * (2 - 1)) / 4)

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