Event: Holly & the Ivy Chess League

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Opponent Rating Result
Christopher Haigh 83 1 - 0
Sean Keddie 0 0 - 1
Peter Czerwinski 1464 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

382 = (1547 + 400 * (1 - 2)) / 3)

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