Event: Open County Championship

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Opponent Rating Result
James Cole 2033 ½ - ½
Paul F Habershon 1971 1 - 0
Timothy Lunn 2060 ½ - ½
Anas Ibn Saifullah 1830 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1974 = (7894 + 400 * (1 - 1)) / 4)

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