He won it in the 1968 Summer Olympics.
I was thinking of buying a George Foreman Grill, do you know anything about them? Yes, it is a grill promoted by a once boxing champion called George Foreman Interesting, did he invent the grill himself? No, It was invented by Michael Boehm in Illinois Ah, a clever marketing then. Can you tell me anything about George Foreman's boxing career? Sure, I know that he won the world heavyweight championship two times and even won an Olympic gold medal Wow that is impressive, which Olympics did he win the gold medal?
After a troubled childhood Foreman took up amateur boxing and won a gold medal in the heavyweight division at the 1968 Summer Olympics.