Event: A Division

Opponent Rating Result
Paul D Perrett 156 ½ - ½
Geoffrey Garnett 95 ½ - ½
Alfie McMonagle 123 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

125 = (374 + 400 * (0 - 0)) / 3)

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