While filming was underway, Omar Sharif was staying at a local hotel, and sent his cousin, who bears a slight resemblance, to tell the director Sharif was at the hotel. The director then rushed the cousin into makeup, mistaking him for Sharif himself.
The film's closing credits state: "The Producers wish to thank the City of New Orleans; Royal Orleans Hotel; Louisiana Film Commission: Phil Oakley, Phil Seifert; Sports Illustrated magazine, and World of Leisure MFG, Co. - Pool Tables."
Production notes stated that Bruce Boxleitner made his theatrical feature film debut in this movie however the actor had previously first appeared in a cinema movie when he played Bobby Joe in 'Six Pack Annie' (1975). Ironically, he plays a similarly named character called Billie Joe (Robbins) in 'The Baltimore Bullet' (1980).
The nick-name of Nick Casey (James Coburn) was "The Baltimore Bullet".
Michael Sigel: As himself, a pool player, aka Mike Sigel, he was billed as Michael K. Sigel. He was later a technical advisor on 'The Color of Money' (1986).
Willie Mosconi: As himself, a sports-caster. He had previously appeared uncredited in 'The Hustler' (1961) where he had played Willie.
Jimmy Mataya: As self. He later played the friend of Julian (John Turturro) in the Green Room in 'The Color of Money' (1986).
Steve Mizerak: As himself. He later played Duke, the first opponent of Fast Eddie Felson (Paul Newman) in 'The Color of Money' (1986).