Event: Open

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Opponent Rating Result
David Spearman 2033 ½ - ½
Charlie B Nettleton 2007 1 - 0
Howard R Hughes 2204 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2348 = (6244 + 400 * (2 - 0)) / 3)

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