Event: Christmas Rapidplay

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Opponent Rating Result
Aslan Awan 1750 0 - 1
David Jarvis 1515 0 - 1
Sophie Fitzpatrick 0 1 - 0
Alexander Jarvis 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

616 = (3265 + 400 * (1 - 3)) / 4)

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