Event: Division 3

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Opponent Rating Result
Robert Kyle 93 1 - 0
Andrew Caswill 97 0 - 1
Guy Turvey 97 ½ - ½
Roy S Richardson 71 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-11 = (358 + 400 * (1 - 2)) / 4)

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