I have never doubted these guys' abilities to coach and create great fighters, they aren't one of the top camps in the world for nothing. but i was just curious what their backgrounds were if anyone knows. i know Greg Jackson has his own form of jiu-jitsu (i don't know how to spell it so i'm not even gunna try), but where did he learn it from. and was Winkeljohn a successful kickboxer? someone fill me in please.