The former heavyweight champion turned pro in 1985 at just 18 years old. He quickly made a name for himself with his incredible punching power. In his first 19 fights, Tyson knocked out 12 opponents in the first round. He didn't even go past six rounds until his 20th fight.
At 20, Tyson became the youngest heavyweight champion ever when he stopped Trevor Berbick in the second round for the WBC title. He then unified the division by beating James 'Bonecrusher' Smith and Tony Tucker for the WBA and IBF belts.
Tyson's career had its ups and downs. He lost to Buster Douglas in a huge upset in 1990. He also lost twice to Evander Holyfield, including the infamous ear-biting incident. His last big fight was a loss to Lennox Lewis in 2003. Tyson retired in 2005 after two more losses.
Now, at 58, Tyson is coming out of retirement. He's set to fight Jake Paul in November in an eight-round pro bout.
But when asked about the toughest chin he ever faced, Tyson didn't name any of the big names. Instead, he picked Jose Ribalta, a relatively unknown fighter he faced in 1986.
In an interview with The Ring Magazine for their 'Best I Faced' feature, Tyson said:
"I hit Jose Ribalta with everything, and he took everything and kept coming back for more."
Tyson knocked Ribalta down three times and landed 220 punches before finally stopping him in the 10th round. The fight showed just how tough Ribalta was, standing up to Tyson's famous right uppercuts and left hooks for nearly the whole fight.