Event: Cambs Division 2

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Opponent Rating Result
Michael Dunkley 1868 0 - 1
Steven M Ashworth 1476 1 - 0
John Greiller 1707 ½ - ½
Jim Jennings 1381 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1708 = (6432 + 400 * (2 - 1)) / 4)

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