The Superfight - Marciano vs. Ali
In the late 1960’s, a Miami boxing promoter, who had a successful radio series of fantasy boxing bouts between champs of years past, fed their statistics into a computer, which predicted a "winner."  Based on the popularity of these fights, he convinced a retired Rocky Marciano and a suspended Muhammad Ali to meet in the ring for filmed fight based on the computer results.  On January 20, 1970, The "Fight of the Century – Ali vs. Marciano" was show one time in 1500 theatres across the United States and Europe and once in the early 70’s on ABC’s Wide World of Sports.  All prints of the fight were destroyed, except for one given to the US Copyright office.  The SuperFight has not been seen since.  Marciano retired as the only undefeated Heavyweight champion.  Ali, was 27 and undefeated.  Both champs were motivated to find out who was the greatest heavyweight champion of all time.