Foreman had retired in 1977, when Spain were organizing the first democratic elections after the dictatorship of Franco. I mention this temporary data to assess what times you are talking about. Well, 10 years later, has the late 80′s, George Foreman caused a seizure in the boxing world by announcing he was returning to the ring. He was 38 then.
His return was brilliant and was taking the necessary form to become a strong contender for the heavyweight title. The first time I fought was in 1991 against Evander Holyfield. He lost that fight called by the press as “the battle of the ages “. In 1993 he again had another chance to Tommy Morrison but lost to the rival who despised him. His dream, he had already achieved in 1973 when he became world champion heavyweight, was to regain the belt. But he escaped again and again.
However, in 1994, in the final against Michael Moorer took the win by points becoming the heavyweight champion in history older (45 years) and most had been slow to lose it and get it back again (20 years) In the twenty-first century, a boxer who had won the gold medal at the 1968 Mexico Olympics, savoring the glory again.