The Greatest brings together nearly 100 photographs of Muhammad Ali at the height of his career by photographer Chris Smith. The images are accompanied by Smith's memories of the time he spent with Ali, from the early days of his career until his final years before retirement. In 1964 Smith was in the United States to photograph The Beatles on their first tour of the country; after photographing the band he headed down to Miami to photograph Cassius Clay, as he was then known, training at the 5th Street Gym. Smith was curious about the athlete who was starting to become influential in the world of boxing, and fortuitously was in the gym when the doors opened and, much to everyone's surprise, in walked The Beatles. At the time, Clay was making a great impact on the boxing world and was in training for his first fight with the formidable champion Sonny Liston. Over the following years Smith documented the boxer in and out of the ring, building an intimate portrait of one of the twentieth century's most charismatic and influential sportsmen.