Video: UFC Vegas 15 / Mike Tyson vs. Roy Jones Jr.

Just 3 p.m. from UFC Vegas, MMA Fighting’s Mike Heck, Jose Youngs and E. Casey Leydon outline the main stories ahead of Saturday’s event at UFC APEX, including the all-new main event between Anthony Smith and Devin Clark, as well as the highly anticipated boxing event with Mike Tyson vs. Roy Jones Jr.