Event: U1850

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Opponent Rating Result
David G Owens 1832 ½ - ½
Lewis A McAtear 1727 1 - 0
Sajjad Dehghan-Afifi 1788 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2049 = (5347 + 400 * (2 - 0)) / 3)

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