The Ex-WWE Wrestler Rob Van Dam appears as one of the two people sparring in the background of the scene when Mac Taylor (Gary Sinise) and Jo Danville (Sela Ward) interview Derek Petrov (Tito Ortiz) at the MMA training center.
Tito Ortiz (Derek Petrov) is a MMA legend who has held the Light Heavyweight title in UFC. He has had many fights against other legends like Chuck Liddell, Randy Couture, Frank Shamrock, and Wanderlei Silva.
Robert Joy (Sid Hammerback) and Vinessa Shaw (Jennifer Walsh) appeared together in The Hills Have Eyes (2006).