Event: Summer Open Division

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Opponent Rating Result
Andrew C Southall 182 1 - 0
Nicholas A Walker 178 0 - 1
David R Thomas 172 1 - 0
John A Edge 178 1 - 0
Robert J Marshall 161 1 - 0
Agoston Mihalik 196 ½ - ½
Andrew C Southall 182 0 - 1
Nicholas A Walker 178 1 - 0
David R Thomas 172 1 - 0
Malcolm A Hunt 174 1 - 0
Robert J Marshall 161 1 - 0
Agoston Mihalik 196 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

411 = (2130 + 400 * (9 - 2)) / 12)

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