Event: Winter Online

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Opponent Rating Result
James A Murphy 1925 0 - 1
James A Murphy 1925 0 - 1
Jeremy F Peach 1450 1 - 0
Jeremy F Peach 1450 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1488 = (6750 + 400 * (1 - 3)) / 4)

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