Event: Cambs Division 2

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Opponent Rating Result
Chris J Russell 1552 0 - 1
John D Wright 1567 0 - 1
Peter C Wells 1459 0 - 1
Michael Kowalczyk 1452 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1108 = (6030 + 400 * (0 - 4)) / 4)

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