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Event: U1825 Group A

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Opponent Rating Result
Anthony DB Wilkinson 140 0 - 1
Neil Milson 152 ½ - ½
Sophie Atkinson 130 0 - 1
Rene Butler 152 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-157 = (574 + 400 * (0 - 3)) / 4)

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