Event: SCCA Division 2 19/20

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Opponent Rating Result
Adam John 148 0 - 1
David E Brown 159 0 - 1
Chris Skirrow 123 0 - 1
Judith Heffer 147 0 - 1
Samuel Gaffney 139 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-177 = (716 + 400 * (0 - 4)) / 5)

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