Event: Altrincham

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Opponent Rating Result
Samuel M Burchett 1482 0 - 1
Max Bourne 1496 1 - 0
Mahin Rughani 1811 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1463 = (4789 + 400 * (1 - 2)) / 3)

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