Muhammad Ali trains on Sept. 16, 1978 at his Deer Lake, Pa., camp for comeback bout with Leon Spinks in New Orleans on September 15. Ali, who claims he was out of shape for the last heavyweight title match with Spinks, says he will be in top form for the next one and plans to make “real history” by regaining the title for an unprecedented third time. (AP Photo/Dave Pickoff)

See more photos of Muhammad Ali through the years.