Muhammad Ali vs. Sonny Liston I (1964)

The 32 year old Liston defended his title against the 22 year old Clay on February 25, 1964, in Miami Beach, Florida, Clay weighed in at 206lbs while Liston was 218 lb. Many of those watching were surprised during the referee's instructions to see that Clay was considerably taller than Liston, the so called 'Big Bear'.