Event: U1940 Tournament

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Opponent Rating Result
Paul A Allison 1698 1 - 0(def)
Andrew D Bettley 1787 ½ - ½
Andrew D Bettley 1787 0(def) - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1787 = (1787 + 400 * (0 - 0)) / 1)

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