Phoenix started acting in television series with his brother River Phoenix and sister Summer Phoenix. His first major film release was in the film Space Camp (1986 - credited as Leaf Phoenix). During his period as a child actor he was credited as Leaf Phoenix, his self-given name. He later went back to his birth name, Joaquín, and received positive reviews for his supporting work in a wide range of films, such as the film adaptation of the novel To Die For (1995) and the period film Quills (2000). He received international attention for his portrayal of Commodus in the 2000 historical epic film Gladiator, which earned him a nomination for the Academy Award for Best Supporting Actor. He has subsequently earned Best Actor nominations for portraying musician Johnny Cash in the biopic Walk the Line (2005) and for his role as Freddie Quell, a sex-obsessed alcoholic World War II veteran in the drama film The Master (2012), which won him the Volpi Cup for Best Actor. He and River Phoenix hold the distinction of being the only brothers to be nominated for acting Academy Awards.