Dwayne Johnson transforms into pioneering MMA fighter Mark Kerr in 'The Smashing Machine,' a new biographical sports drama set in the late '90s from writer-director Benny Safdie. Johnson and Emily Blunt, who plays Kerr's then-girlfriend Dawn Staples, spoke to The Hollywood Reporter all about the new film, including what it's creation has meant to the movie's subject, Kerr, how they prepared to shoot the film's intense scenes and what Johnson feels he learned about himself from participating in the project.
