Event: Easter Rapidplay

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Opponent Rating Result
J Alan Stockley 1401 0 - 1
Nick Tadd 1293 0 - 1
Jayden Wang 890 0 - 1
George Butterworth 1096 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

770 = (4680 + 400 * (0 - 4)) / 4)

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