Meet a very jacked Jake Gyllenhaal. The first trailer for "Southpaw," the Weinstein Company boxing film directed by Antoine Fuqua, debuted on Friday and shows Gyllenhaal as a violent Junior Middleweight Champion who may have caused his wife's (Rachel McAdams) death. The trailer also features new music from Eminem, who was at one point attached to the film as an actor. Co-starring 50 Cent, Rita Ora and Forest Whitaker, "Southpaw" is due out July 31.
Dramatic Movie Transformations
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