Event: SCCU County Championship: Open

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Opponent Rating Result
John N Sugden 2092 ½ - ½
John M Quinn 2172 0 - 1
Mark M Robertson 2037 0 - 1
Andrew McGuinness 1853 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1839 = (8154 + 400 * (0 - 2)) / 4)

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