On November 22, 1986, Mike Tyson became the youngest heavyweight champion in history when he claimed WBC title from Trevor Berbick at the Las Vegas Hilton in Winchester, Nevada.
Tyson was just 20 years, 145 days old at the time of his first championship title fight.
TYSON VS BERBICK
Tyson entered the fight with Berbick sporting a perfect 27-0 record, with 25 of his wins coming by knockout. Berbick was 31-4-1, having just won the belt in his previous fight versus Pinklon Thomas.
Tyson applied his trademark pressure in the second round, knocking Berbick down early in the frame, then again late. The champ managed to get back up to his feet, but immediately stumbled backward onto the canvas. Two more times, Berbick tried vainly to get to his feet, before referee Mills Lane stopped counting and waved the fight off at the 2:35 mark.
TYSON UPSET BY DOUGLAS
Tyson successfully defended his belt nine times before falling to Buster Douglas on February 11, 1990 at the Tokyo Dome in Japan.