The Greatest Trailer Reveals Jaalen Best as Muhammad Ali Ahead of Prime Video Premiere

Prime Video has released the official trailer and key art for The Greatest, an upcoming biographical drama about boxing legend Muhammad Ali. The series will premiere all eight episodes worldwide on November 4, 2026, exclusively on Prime Video, in more than 240 countries and territories. Starring newcomer Jaalen Best as Cassius Clay, who later became Muhammad Ali, the series follows the legendary boxer’s transformation from a gifted young fighter into one of the most recognizable figures in sports and American…