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Event: U1825 Group A

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Opponent Rating Result
Robert E Rickard 140 1 - 0
Bernard Pratten 152 0 - 1
Granville Hill 152 1 - 0
Dave Peardon 107 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

238 = (551 + 400 * (2 - 1)) / 4)

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