Event: Peter Rooke KO

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Opponent Rating Result
Kevin J Hurst 173 ½ - ½
Mark J Cockerton 125 0 - 1
Alan W Brusey 158 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

19 = (456 + 400 * (0 - 1)) / 3)

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