Jack Dempsey was one of America’s first great sports heros. On September 14, 1923, he faced Argentina’s Luis Angel Firpo at the Polo Grounds in New York. Known as the “Wild Bull of the Pampas,” Firpo was dropped seven times in the first round. Firpo came back and sent Dempsey through the ropes with a single right hand. Dempsey made it back into the ring and beat the 10-count. The fight ended 57 seconds into the second round with a knock out by Dempsey.