Round Three: The Rivalry
S1, E3: Cassius Clay joins the Nation of Islam and adopts the name Muhammad Ali. For three years Ali dominated the heavyweight ranks, but in 1967 he refused service for the Vietnam War in the U.S. Army.

S1, E3: Cassius Clay joins the Nation of Islam and adopts the name Muhammad Ali. For three years Ali dominated the heavyweight ranks, but in 1967 he refused service for the Vietnam War in the U.S. Army.