Event: Division One

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Opponent Rating Result
Paul S Cooksey 2320 1 - 0
Andrew P Smith 2261 1 - 0
Paul S Cooksey 2324 ½ - ½
Ewan Wilson 2126 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2558 = (9031 + 400 * (3 - 0)) / 4)

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