drop bear
Sr. Grandmaster
Good point, DB. It's entirely possible for someone to train for and participate in a sport (MMA, boxing, Judo), training only the moves for that sport, within the rules of that sport, for the purpose of self-defense. And someone teaching/coaching that sport could easily make a few adjustments and teach the sport (while training for the sport, under the rules of the sport) for self-defense.
Eg. Charlie Zelenof.