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Muhammad Ali (56-5, 37 KOs) called himself the greatest, but he was off by one as he come in at No. 2 on my list.
Ali was the most electrifying character to ever lace up a pair of boxing gloves, and he parlayed that into a successful career in the ring as well as out of it.
Floyd Mayweather, Jr. is also known for his gift of gab, but he creates controversy and gains legions of haters, while Ali grew his popularity with the help of his pre-fight taunts.
Ali won a gold medal at the 1960 Rome Olympic games, beginning a career that would be filled with awards and championship titles.
Ali was part of some of the most memorable fights in boxing history, including the epic Thrilla in Manila against Joe Frazier.
Ali beat an impressive list of fighters including such boxing greats as Frazier, George Foreman, Leon Spinks, Ken Norton and many others.
The sport of boxing would not be where it is today if not for Ali, his epic fights and his charismatic personality.