Ali/Liston "phantom punch"
The second fight between heavyweight champion Muhammad Ali and challenger Sonny Liston provided one of the most controversial endings in boxing history. Held in Lewiston, Maine, in 1965, the fight came two years after Ali defeated Liston in a previous fight. Midway through the first round of the rematch, Liston fell to the canvas. He did not get up. Many witnesses at ringside did not see a punch, and Ali himself was seen asking, "Did I hit him?", leading to speculation that Liston threw the fight on purpose.