Event: Division 3

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Opponent Rating Result
Nicholas Blackham 1536 0 - 1
Phil McKenna 1391 ½ - ½
Doug M Bonn 1526 0 - 1
Leslie Pringle 1607 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1215 = (6060 + 400 * (0 - 3)) / 4)

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