Have a look at the trailer for this new MMA movie being released in September by Lionsgate called "Warrior."
If a trailer sums up the movie, let this sum up the trailer: Brothers fight in the final of a mixed martial arts tournament. And to think we make a big deal out of teammates fighting one another.
The principle actors include Tom Hardy, Jennifer Morrison, Joel Edgerton and Nick Nolte. Fighters listed among the credits include Nate Marquardt, Anthony Johnson and Yves Edwards.