Event: Mini League

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Opponent Rating Result
Jim Bird 98 0 - 1
Stephen P Burton 55 1 - 0
Jonathan Pugh 0 0 - 1
John Hipshon 123 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-131 = (276 + 400 * (1 - 3)) / 4)

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