Event: Derby & District Cup QP

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Opponent Rating Result
John M Potter 0 1 - 0
Isaac Buckley 0 ½ - ½
Steve P Retout 0 ½ - ½
Daniel Blumenow 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

100 = (0 + 400 * (1 - 0)) / 4)

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