Event: Division Two

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Opponent Rating Result
Andrew Cottom 134 ½ - ½
Fred S Dickson 139 1 - 0
Harry Evans 157 1 - 0
Geoffrey C Wesson 131 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

240 = (561 + 400 * (2 - 1)) / 4)

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