Event: C Division

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Opponent Rating Result
Keith Harrison 1576 0 - 1
Chris Sinu 1621 ½ - ½
Ray Pallister 1608 ½ - ½
Ajay Selvan 1450 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1464 = (6255 + 400 * (0 - 1)) / 4)

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