YouTuber-turned-boxer Jake Paul had to wait an extra four months for his high-profile match with 58-year-old former heavyweight champion Mike Tyson.

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.

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.