Michael Jordan, the greatest basketball player in the world was cut from his high school basketball team. But he didn't let that stop him and continued player and he ended up being one of the greatest players of all time.
This is the punch that sent George Foreman sprawling to the canvas in the round. The "Rumble in the Jungle" was the fight that Muhammad Ali deployed his famous Rope-A-Dope strategy (allowing big George to punch himself out). the rest is history.