Redbelt (2008)

Set in the west-side of Los Angeles fight world, a world inhabited by bouncers, cage-fighters, cops and special forces types, Redbelt, is the story of Mike Terry, a Jiu-Jitsu teacher who has avoided the prize fighting circuit, choosing instead to pursue an honorable life by operating a self-defense studio with a samurai's code.

Official website: http://www.sonyclassics.com/redbelt/