Top 15 KOs in boxing history

15. Manny Pacquiao KO2 Ricky Hatton, May 2, 2009 – Hatton was expected to provide a stiff test for Pacquiao, but he was completely outclassed. He entered the fight with a 45-1 record, but was battered in the first round and then knocked stone cold by a Pacquiao left in the second. (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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