Event: Cambs Division 2

Opponent Rating Result
Ben Tarlow 1876 ½ - ½
Richard HK Mann 1780 1 - 0
Steven M Ashworth 1476 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1844 = (5132 + 400 * (1 - 0)) / 3)

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