Event: Grand Prix S2

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Opponent Rating Result
Caroline L Mountford 1603 0 - 1
Alan M Willett 890 0 - 1
S Ali Arshad 1167 ½ - ½
Leo Mills 1000 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1065 = (4660 + 400 * (1 - 2)) / 4)

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