Event: Christmas Rapidplay

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Opponent Rating Result
Aslan Awan 1750 0 - 1
David Jarvis 1515 0 - 1
Alexander Jarvis 0 0 - 1
Peter Turner 1110 0 - 1
Aryan Shankar 1340 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

903 = (5715 + 400 * (1 - 4)) / 5)

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