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.

An early end to the fight between Mike Tyson and Jake Paul favors Tyson, but a longer fight favors Paul. Experts see other possibilities, too.

Mike Tyson's age is a primary concern as he prepares to box Jake Paul, 31 years his junior, on Netflix this Friday. Tyson, 58, reassures fans that he's not only fit to compete but also rejuvenated.  Tyson makes his first professional walk since failing to get off the stool against journeyman Kevin McBride in 2005.