Although Herschel Walker  football career ended 12years ago, Saturday evening marked the beginning of his new career: fighting in MMA. Walker made his mixed martial arts debut on the Strikeforce Miami card, taking on Greg Nagy. Walker was in incredible shape — as always — and he dominated almost every step of the way, scoring a third round TKO. With all the publicity leading up to the fight, no doubt football fans were curious to see how Herschel would fair in his debut. Check out the Herschel Walker/Greg Nagy fight video to see for yourself: