Event: Grand Prix S10

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Opponent Rating Result
Esme A Shiers 1000 1 - 0
Joseph P Alcock 1558 1 - 0
Dean Corbishley 1500 1 - 0
Raymond G Evans 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1215 = (4058 + 400 * (3 - 1)) / 4)

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