Muhammad Ali also known as Cassius Clay was an American professional boxer and activist. He is widely regarded as one of the most significant and celebrated sports figures of the 20th century.
Leon Spinks is an American professional boxers former who competed from 1977 to 1995.
Muhammad Ali lost the WBA Heavyweight title to Spinks in a widely promoted bout on Feb. 15, 1978. Spinks was the only fighter ever to take away a title from Ali in the ring. Muhammad Ali would regain his championship later that year in a rematch. Here is a B/W signed photo by the two Champions.