Event: Cambs Division 2

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Opponent Rating Result
Peter C Wells 1488 1 - 0
Andrew Gough 0 0 - 1
Ben Rhodes 1593 ½ - ½
Norman Wedley 1458 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1235 = (4539 + 400 * (2 - 1)) / 4)

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