Event: Durham League Division A

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Opponent Rating Result
Charlie Hazlerigg 1667 1 - 0
Richard J Harris 1774 ½ - ½
William Bartram 1924 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1788 = (5365 + 400 * (1 - 1)) / 3)

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