Dwayne "The Rock" Johnson heads back into the fighting ring in his new movie The Smashing Machine - but his real-life character Mark Kerr's career was much more dangerous than any WWE match. Johnson,

The Smashing Machine,” written and directed by Benny Safdie, stars Dwayne Johnson and Emily Blunt. The biopic will be released in October.

Dwayne Johnson stars as former wrestler and UFC star Mark Kerr in a new trailer for Benny Safdie's "The Smashing Machine."