Event: Challengers

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Opponent Rating Result
Nick Down 0 0 - 1
Raymond Milner 0 1 - 0
E Alan Crickmore 1458 ½ - ½
E Alan Crickmore 1458 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

729 = (2916 + 400 * (1 - 1)) / 4)

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