Event: Club Championship Div 3

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Opponent Rating Result
Philip Grocott 1285 ½ - ½
Vicky Kelsall 1269 ½ - ½
Matthew Dean 1159 0 - 1
Philip Grocott 1285 0 - 1
Vicky Kelsall 1141 0 - 1
Mark Randell 1179 0 - 1
Mark Randell 1189 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

930 = (8507 + 400 * (0 - 5)) / 7)

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