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Event: U1825 Group A

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Opponent Rating Result
Julio C Calcina 110 0 - 1
Edward Knox 152 0 - 1
Peter A Mottram-Epson 107 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-10 = (369 + 400 * (1 - 2)) / 3)

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