UW has played nothing but man to man defense over that time except for a very brief flirt with the 2-3 zone under Gard which was a disaster. There have been changes within the man to man, from going over the screen and hedging, to switching all screens, to going over and sinking. Currently, I'm not exactly sure what the system is, and that is a big part of the problem. Here are a series of clips from the Marquette game showing different ways they play the ball screen.
This is classic switching. Davison runs into the screener and stays with him after the dribble hand off, and Ford goes with the ball. Then there is another dribble hand off, and Ford stays on ball while Iverson switches with the guard going to the corner. Ford then hands off the ball carrier to Davison and stays with the big that floats off to the left side of the floor. At this point Happ's man comes up from the post to set another screen, and Davison hands off the ball carrier off to Happ. Happ does not come out to take him on the switch, and he gets a wide open 3.
In this clip Davison runs into the screener, Happ switches to the guard, and Happ shows this time to take away the jumper. The guard takes a dribble to create space, and Happ steps back, then comes out again to challenge but it's a shot fake. The problem is that Davison does not switch, he goes over the screen and comes over to the guard, instead of staying with the screener. The guard passes to an open man for a dunk (notice the other 3 defenders are all standing 18 feet from the hoop where they can't help).
Here there is no switching on the ball or off. There is a bunch of off ball screening action, a dribble handoff, and finally a ball screen, but everyone stays home with their man. On the final screen, Iverson shows on the ball carrier, before retreating to his man, and Davison "fights" over the screen to get back to his man.
Here Schlundt fights over the screen, and Charlie sinks to take away the lane instead of showing on the ball carrier to take away the jumper (I actually think Charlie has no idea where he is or what he is doing, but let's just say he was sinking on this one).
Finally, one last switch clip. On this one, both Happ and Davison leave the ball carrier, and go with the screener. Notice after the guard gets the wide open 3, Happ and Davison are fighting over who was responsible for what.
As I am known to say on occasion at Badger games, "What the hell are they doing"? Some of this is on the players as they are obviously getting torched routinely. More has to go on the coaches. They are playing a bunch of young players who are still learning how to play defense, and I think they are overloading them with too much responsibility. They should get rid of the switching. Switching requires a lot of communication, and a lot of feel for when to switch, when to switch back, and none of the young players are good enough for this.
When Bo started at UW, the defensive rules were simple. The on ball defender goes over the screen and stays on ball. The screening defender hedges every time and recovers to his man afterwards . All 3 other guys sink in when that happens to take away the lane. Everyone has a job, and everyone knew what the other's job was. If you did not do your job then you go to the bench.
Simplicity is a great thing. The Badgers need more of it on defense.