Muhammad Ali vs. Ken Norton (1973)

Still rebuilding a winning record after his first professional loss to Joe Frazier, Ali faced Norton on March 31, 1973, at the Sports Arena, San Diego, California. The fight was aired live on free TV in the United States via ABC. The fight against Norton started a years-long rivalry. Ali was outmaneuvered by Norton's unorthodox fighting style, which involved jabbing from below and crossing his hands for defense. As the final bell rang, Norton won on a split decision, igniting a controversy in the boxing world. Soon after the fight, Ali was treated in hospital for a broken jaw, an injury sustained in the second round of the fight