Event: Keddie Cup

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Opponent Rating Result
Alex Burke 1856 0 - 1
Alex Burke 1856 0 - 1
Michael Holmes 0 ½ - ½
Michael Holmes 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

828 = (3712 + 400 * (1 - 2)) / 4)

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