Prime Video has released the first official trailer and premiere date for its biographical series about Muhammad Ali, The Greatest. In press release on Wednesday, the streamer announced that the series, starring Hollywood newcomer Jaalen Best (What Is Dyslexia, All American: Homecoming), will release all episodes on Nov. 4, 2026.
Watch The Greatest exclusive trailer here:
The series is a first of its kind as the first authorized scripted series to detail the early life of the influential and talented heavyweight boxer, Mohmadd Ali.
The Greatest’ official trailer follows Muhammad Ali’s journey from youth to adulthood as Cassius Clay, a young man from Louisville, Kentucky, becomes one of boxing history’s most influential figures. Set at a monumental turning point in America, The Greatest explores Clay’s battle to find his independent identity. Prime Video writes in the series synopsis: “Through the fights that made him a champion and the convictions that made him an icon, a young man from Louisville transforms himself into Muhammad Ali, the greatest of all time.”
Best will play the lead as Cassius Clay/ ’Muhammad Ali’, Omari Hardwick (Army of the Dead, Being Mary Jane) will play Cassius Clay Sr., Dana Gourrier (The Good Time Girls, To Live and Die and Live) will play Odessa ‘Bird’ Clay, Kai Parham (Colin in Black & White, Vows) will play Rudy Clay, Amin Joseph (To Live and Die and Live, Zane’s The Jump Off) will play Sonny Listen, Giovanni Ribisi (Gone in 60 Seconds, A Million Ways to Die in the West) will play Angelo Dundee, and Michael Ealy (Think Like A Man, The Perfect Guy) will play Malcom X.
Ben Watkins (Hand of God, Quest to Ref) created and serves as showrunner for The Greatest. Lonnie Ali (City of Ali, Muhammad Ali’s 50th Birthday Celebration), the wife of the late Muhammad Ali, and Watkins executive produce the series.