Event: Christmas Rapidplay

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Opponent Rating Result
Ollie Walton 1251 0 - 1
Ryan Fox 0 0 - 1
Joe Vera-Sanso 1135 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

395 = (2386 + 400 * (0 - 3)) / 3)

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