Event: R Division

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Opponent Rating Result
Leo Cheung 1285 1 - 0
Ashton Morrissey 1335 ½ - ½
Leo Cheung 1285 1 - 0
Ashton Morrissey 1335 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1410 = (5240 + 400 * (2 - 1)) / 4)

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