India, Sept. 11 -- Actor Sydney Sweeney undergoes a jaw-dropping transformation to play celebrated boxing champion Christy Martin in her upcoming release Christy. The actor dropped the official trailer of the film on Thursday, days after the world premiere at the Toronto International Film Festival, where she earned rave reviews. Many even predicted that Sydney could very well earn an Oscar nomination for her performance in the film. David Michod has directed the film.

The trailer begins with Sydney being introduced into the world of boxing as a newcomer. In no time, she is punching her way to grand success, winning titles and setting her life up with manager-turned-husband, Jim (Ben Foster). But things do take a hard turn, when it seems...