Michael Jai White takes over the role of George Chambers from Ving Rhames in this film. White had previously played Mike Tyson, in the TV film Tyson (1995), the real life person the character of Chambers is based on.
Michael Jai White ("Iceman" Chambers) stated that despite being on screen rivals, he and Scott Adkins (Boyka) got along very well off camera because neither of them were method actors. "On camera, we'd have on our mean faces and be trying to intimidate one another. But as soon as the director yelled 'Cut!', we were back to talking about places to eat good salads."