Event: Division 2

Opponent Rating Result
Colin J Mills 148 1 - 0
Simon R Edwards 178 ½ - ½
Glyn D Valentine 145 1 - 0
Karl Lockett 149 1 - 0
Geoff Laurence 149 ½ - ½
Philip N Birks 141 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

352 = (910 + 400 * (3 - 0)) / 6)

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