Joe Rogan believes Brock Lesnar had the potential to be an 'all-time great’ in the UFC. Rogan blamed Lesnar’s time with the WWE as one of the reasons for his lack of key mixed martial arts skills.

It’s been over a year-and-a-half since Brock Lesnar stepped into a WWE ring and even longer (almost nine years) since he fought inside a UFC Octagon. But one boxing wants to make a comeback ...