Event: Tonbridge

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Opponent Rating Result
Preston Choi 1422 0 - 1
Mayank Kamble 1197 ½ - ½
Kai Xu 1345 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1055 = (3964 + 400 * (0 - 2)) / 3)

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