Herschel Walker Eyes Improvement for Second MMA Bout

NFL great-turned-MMA novice Herschel Walker is back at the American Kickboxing Academy in San Jose, Calif., training nearly every day for his second bout for Strikeforce later this year.

The 48-year-old Heisman trophy winner and U.S. Olympic bobsled team member talks about his second go-around in training, what he's tweaking since his January debut victory, and gives his reaction to how his MMA aspirations has taken the sports media by storm.