Event: Division 2

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Opponent Rating Result
Ray Rushworth 0 0 - 1
Derek Marsden 103 1 - 0
William T Jones 37 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

180 = (140 + 400 * (2 - 1)) / 3)

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Opponent Rating Result
David A Talbot 152 ½ - ½
Brian Bancroft 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-124 = (152 + 400 * (0 - 1)) / 2)