George Foreman defenses were made before Foreman's first professional loss to Muhammad Ali in "The Rumble in the Jungle" in 1974. Unable to secure another title opportunity, Foreman retired after a loss to Jimmy Young in 1977. Following what he referred to as a religious epiphany, Foreman became an ordained Christian minister. Ten years later he announced a comeback and, in 1994 at age 45, he regained a portion of the heavyweight championship by knocking out 27-year-old Michael Moorer to win the unified WBA, IBF, and lineal titles. Foreman remains the oldest world heavyweight champion in history, and the second oldest in
George Foreman by the WBA and WBC. In 1972, still undefeated and with an impressive knockout record, Foreman was set to challenge undefeated and Undisputed World Heavyweight Champion Joe Frazier. Despite boycotting a title elimination caused by the vacancy resulting from the championship being stripped from Muhammad Ali, Frazier had won the title from Jimmy Ellis and defended his title four times since, including a 15-round unanimous decision over the previously unbeaten Ali in 1971 after Ali had beaten Oscar Bonavena and Jerry Quarry. Despite Foreman's superior size and reach, he was not expected to beat Frazier and was a 3:1 underdog