Top 15 KOs in boxing history

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2. George Foreman TKO2 Joe Frazier, Jan. 22, 1973 – Frazier entered the bout as the champion, with a record of 29-0 with 25 knockouts. Foreman was 37-0 with 34 knockouts. It promised to be an action-packed fight, but it was all one-sided. Foreman knocked Frazier down six times, once lifting Frazier off his feet with a punch, en route to claiming the title. (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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