Event: BCL Division 2

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Opponent Rating Result
Alan Heath 1832 0 - 1
Peter S Gill 1700 0 - 1
James Grimditch 0 ½ - ½
Alexander Potts 0 0 - 1
John E McKeon 1582 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

783 = (5114 + 400 * (0 - 3)) / 5)

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