Martin is trying to implement a half-court defense that is intuitive and relies on communication and intelligence. I watched one of his practice videos where he gives the players options on how to handle ball screens. In other words, they can choose on the fly whether to hedge, whether to switch, whether to not hedge and allow the on ball defender to dive below the screen. Tennessee's players are not used to this; I think most really, really good defensive teams most likely run their defense this way; however, those teams haven't spent their entire college career playing Pearl style half-court defense, which goes against normal fundamental principles and doesn't allow for any intuitive decision-making. With him, they either switched every screen or resorted to their "ice" defense which attempted to the screen not allowing the offensive player to use it and forcing him to stay on one side of the floor. In other words, we suck because the players are used to gimmick defense and not used to actually communicating and doing things that most fundamentally sound teams do.