Floyd Mayweather gives big props to Pacquiao, Augustus and Cotto

Floyd Mayweather has praised his opponents Manny Pacquiao, Emmanuel Augustus, and Miguel Cotto before returning to the sport on June 6th. The boxing legend, who won world titles from super-featherweight to super-welterweight, gave props to some of the toughest he's shared a ring in the sport. Speaking to the Million...