Event: Haslemere Trophy

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Opponent Rating Result
Sam Kammin 1698 ½ - ½
Adam Tarling 1668 ½ - ½
Adam Tarling 1668 ½ - ½
Sam Kammin 1698 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1583 = (6732 + 400 * (0 - 1)) / 4)

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