Event: September/October rapidplay

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Opponent Rating Result
Marie Chan 415 0 - 1
Akif Emre Saglik 877 0 - 1
Akif Emre Saglik 877 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

323 = (2169 + 400 * (0 - 3)) / 3)

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