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Event: U1825 Group A

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Opponent Rating Result
Andrew J Donnelly 140 ½ - ½
Herman FF Kok 152 1 - 0
Jack Erskine-Pereira 107 ½ - ½
RF (Bob) Collins 152 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

338 = (551 + 400 * (2 - 0)) / 4)

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