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Event: U1825 Group A

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Opponent Rating Result
Ben Mason 152 0 - 1
Jack Erskine-Pereira 130 0 - 1
Paul Mottram 152 1 - 0
Ian D Lamb 140 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

44 = (574 + 400 * (1 - 2)) / 4)

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