Herschel Walker has been making the media rounds this week to hype up his mixed martial arts debut at Strikeforce “Miami” on Jan. 30. Above, Walker talks to Fanhouse’s Ariel Helwani. Below, footage from a press conference that was held yesterday via The Fight Nerd. And a bonus video at the bottom of Walker calling out Mike Tyson way back in the day, back when Mike Tyson was Mike Tyson.