Event: Division 4

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Opponent Rating Result
Sam Turner 108 0 - 1
Harry Gardiner 104 1 - 0
Nicholas PA Wright 104 ½ - ½
Julian P Cook 90 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

102 = (406 + 400 * (1 - 1)) / 4)

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