Event: Cambs Division 1

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Opponent Rating Result
Paul Hanks 1858 0 - 1
Colin Emery 1779 0 - 1
Peter Baddeley 1622 0 - 1
John Greiller 1707 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1442 = (6966 + 400 * (0 - 3)) / 4)

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