Event: Autumn OTB Division 2

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Opponent Rating Result
Allan Gardner 1900 ½ - ½
Dave S Almond 1713 ½ - ½
Rebecca Correa 1450 ½ - ½
Matthew Hackett 1400 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1716 = (6463 + 400 * (1 - 0)) / 4)

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