Event: Internal Rapidplay February

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Opponent Rating Result
Karam Alwakeel 1013 0 - 1
George Butterworth 1015 0 - 1
Jayden Wang 883 1 - 0
Neil Sotheby 1235 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

837 = (4146 + 400 * (1 - 3)) / 4)

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