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

Benny Safdie's The Smashing Machine depicts Dwayne Johnson portraying athlete Mark Kerr in a biopic about the latter's hectic life and career.

A24 is previewing "The Smashing Machine," directed by Benny Safdie and starring Dwayne Johnson as MMA fighter and two-time UFC Heavyweight Tournament Champion Mark Kerr.