Event: Cambs Division 2

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Opponent Rating Result
Dave J Hurricks 1713 1 - 0
John Greiller 1666 1 - 0
Richard HK Mann 1776 0 - 1
Neil Chedd 1675 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1908 = (6830 + 400 * (3 - 1)) / 4)

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