Event: DCL Div 2

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Opponent Rating Result
Geoff C Searing 165 0 - 1
Peter Wilcock 151 1 - 0
Robert Halse 140 ½ - ½
Steve B Peirson 172 0 - 1
Mark A Potter 156 ½ - ½
Mark A Potter 156 ½ - ½
Steve B Peirson 172 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

45 = (1112 + 400 * (1 - 3)) / 7)

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