Event: Rapidplay Results Sent for Grading

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Opponent Rating Result
Matt O'Keeffe 1400 ½ - ½
Matt O'Keeffe 1400 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1400 = (2800 + 400 * (0 - 0)) / 2)

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