Event: Mini League

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Opponent Rating Result
Bill Tait 133 0 - 1
John Hipshon 123 0 - 1
Ben Strutt 128 0 - 1
Nicholas Waite 76 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-185 = (460 + 400 * (0 - 3)) / 4)

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