@tour2ma said:Thought just hit me that the CBA's practice limitations may have made it nearly impossible to install and maintain a complex D today... Yep....definitely diminishes what you can practice and prepare for......just a few reps are allowed. so most stuff is learned in the class room and only gets applied during games.... Notice how new coach speak always refers to "the room", instead of anything else..... The QB room is blah blah....the LB room blah blah.... That cause thats where they live now.....