Top 15 KOs in boxing history

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8. Thomas Hearns KO2 Roberto Duran, June 15, 1984 – Hearns showed his power in this fight, dropping Duran twice in the first and ending the fight with a blistering straight right in the second that sent Duran face first to the canvas. (Photo credit: Getty)

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On the heels of one of the most devastating knockouts in boxing history, Yahoo! Sports analyst Kevin Iole gives his top 15 KOs of all-time. Where does Juan Manuel Marquez's knockout of Manny Pacquiao rank in history?

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