Muhammad Ali vs. Ron Lyle was a professional boxing match contested on May 16, 1975, for the undisputed heavyweight championship.

[1] Lyle had offered the opportunity to compete for the title despite his loss to the then little-known Jimmy Young two months earlier at Honolulu, Hawaii.

This bout was aired live primetime in the United States via ABC with Howard Cosell doing the play-by-play and it took place in Las Vegas, Nevada.

Ali had forecast that the bout would be a "treat for the people", but in many of the rounds he preferred to defend and absorb Lyle's sharp punches.

For the next two rounds, Ali rested, boxing defensively and retreating to the ropes while accepting Lyle's punches.