Event: Reigate

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Opponent Rating Result
Filipe D'Avillez 977 1 - 0
Adilet Ospan 0 ½ - ½
John Hatherill 1129 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

835 = (2106 + 400 * (1 - 0)) / 3)

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