Event: County Championship

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Opponent Rating Result
Florian Biermann 2032 0 - 1
Marcel V Taylor 1668 0 - 1
Paul Wileman 1677 1 - 0
Mark SR Radford 1754 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1783 = (7131 + 400 * (2 - 2)) / 4)

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