Event: Grand Prix S10

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Opponent Rating Result
S Ali Arshad 1167 1 - 0
David A Hallen 1486 ½ - ½
Raymond G Evans 0 0 - 1
Rowan J Webb 1375 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1107 = (4028 + 400 * (2 - 1)) / 4)

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