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Event: Average under 1800

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Opponent Rating Result
Cecil Sloan 1754 ½ - ½
Ashraf M Hossain 1819 1 - 0
Mark Lim 1900 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1824 = (5473 + 400 * (1 - 1)) / 3)

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