Ground Rules (1997)

"Battle Ball" is the new hot thing in the world of underground sports gambling. Motocross teams armed with metal claws and body armor fight their way to a caged car used as a moving goal. Led by corrupt bookmakers who want to up the blood and death to attract more people, one man decides to take a stand the only way he can: he takes the sport by storm and begins on a path of carnage and blood that can only bring the league down.