Event: Open County Championship

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Opponent Rating Result
John A Feavyour 1855 0 - 1
Jeff R Dawson 2022 1 - 0
Aarnavh Trivedi 1965 ½ - ½
James Pack 1818 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1815 = (7660 + 400 * (1 - 2)) / 4)

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