Event: Holly & the Ivy Chess League

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Opponent Rating Result
Sean Keddie 0 ½ - ½
Karim Khan 1799 0 - 1
Karim Khan 1810 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

936 = (3609 + 400 * (0 - 2)) / 3)

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