Event: Division 4

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Opponent Rating Result
John D Robinson 1461 0 - 1
Darong Huang 0 0 - 1
Peter Fisher 1511 ½ - ½
Nicholas Hayes 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

443 = (2972 + 400 * (0 - 3)) / 4)

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