Event: B&DCL Div 1 test

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Opponent Rating Result
David Michael Fuller 170 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-230 = (170 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Richard W Ursell 150 1 - 0(def)
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (0 - 0)) / 0)