Event: Division 4

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Opponent Rating Result
Philip Sykes 1025 0 - 1
Jack Hitchman 1025 0 - 1
Brian Jones 1141 ½ - ½
Al Turley 1025 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

954 = (4216 + 400 * (1 - 2)) / 4)

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