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

Dwayne "The Rock" Johnson transforms into MMA and UFC fighter Mark Kerr in Benny Safdie's A24 biopic "The Smashing Machine," releasing this fall.

The upcoming A24 biographical drama film “The Smashing Machine” takes its title from the 2002 HBO documentary of the same name, which chronicled the rise and struggles of UFC legend and MMA pioneer Mark Kerr.