Former two-time heavyweight champ Mike Tyson was granted a professional boxing license to fight Jake Paul despite being 58 years old.

IRVING, Texas – Jake Paul is three days out from what will likely be the most-watched bout of his 12-fight boxing career. Looking at him, however, you might not be able to tell. The 27-year-old YouTuber-turned-boxer was all smiles and charisma Tuesday during an open workout at Toyota Music Factory ahead of Friday’s boxing match vs. Mike Tyson.

Jake Paul faces Mike Tyson this Saturday but has his sights set on a bigger challenge—Canelo Alvarez. Read how Paul envisions becoming the 'face of boxing.