Before the credits the following can be found: This motion picture is based upon true events in the life of Frank W. Dux. From 1975 to 1980 Frank W. Dux fought 329 matches. He retired undefeated as the World Heavy Weight Full Contact Kumite Champion. Mr. Dux still holds four world records: Fastest Knockout - 3.2 seconds Fastest Punch with a Knockout - .42 seconds Fastest Kick with a Knockout - 72 mph Most Consecutive Knockouts in a Single Tournament - 56 Subsequently Mr. Dux founded the first American Ninjitsu System. Dux-Ryu.