Event: Winter Online

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Opponent Rating Result
Edward Chu 911 0 - 1
Edward Chu 911 ½ - ½
Andrew Cowan 1623 0 - 1
Andrew Cowan 1623 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

967 = (5068 + 400 * (0 - 3)) / 4)

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