Many of the kicks to the head and body were real contact hits between Darren Holmquist and Martin Chan.
The film was made to show WTF Taekwondo (World Taekwondo Ferderation) style sparring mixed with a feeling on a typical sports Drama rather than a typical martial arts fight scene.
Martin Chan is a real life 4th Dan in Taekwondo which is considered the rank of Master.
The shot of Virgil's belt is Darren Holmquist's real life black belt. You can see him name is blurred.
Frank Hernandez traveled from San Francisco to Palmdale twice to film.