“Anyone who thinks they’re going to beat me is going to have to do a lot and endure hell, because I’m not quitting,” the boxing icon tells Boardroom ahead of her second PFL MMA bout.

Claressa Shields is just 26, but she’s already got more history to her name than a stack of social studies textbooks. A two-time Olympic gold medalist by the age of 21, the Flint, Michigan native went on to become the fastest three-weight world champion in all of boxing history and the first woman to reign as undisputed, lineal champ in two divisions simultaneously. Read More