Pound-for-pound rankings: Death, taxes and Mayweather

Floyd Mayweather improved to 45-0 with his majority decision victory against Canelo Alvarez.

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The outlandish Broner irritates many with his out-of-the-ring antics, but there's no denying his talent. Last June, Broner climbed two weight classes to claim a welterweight belt with a decisive decision over Paulie Malignaggi. There are shades of Mayweather in Broner -- most notably his shoulder roll defense -- and an aggressive style that has made him television-friendly. Next up: a showdown with Argentine slugger Marcos Maidana in December.