Event: Tonbridge

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Opponent Rating Result
Toby Mok 1431 0 - 1
Akbar Rizaev 0 ½ - ½
Max Evans 1297 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

643 = (2728 + 400 * (0 - 2)) / 3)

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