Event: County Challenge

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Opponent Rating Result
Andrew H Heard 0 0 - 1
Venkatesh Subramanian 1818 0 - 1
Peter A Nickals 1795 1 - 0
Edison Figueroa 1908 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1180 = (5521 + 400 * (1 - 3)) / 4)

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