I don't think they changed Les at all actually
Hoops Picture Pages: Soft Hedge
Trey Burke had—by his standards—a sub-par performance against Nebraska, needing 16 shots to score 18 points and only dishing out three assists. In the post-game presser, I asked John Beilein if Nebraska did anything defensively that he hadn't seen so far this year; without going into details, he mentioned that the Huskers had a different way of defending the pick and roll—Burke's bread-and-butter play.
After taking a look at the film, I think I've found what he was talking about. Last year, opponents utilized a hard hedge—doubling Burke off the screen with their big—as a way to dial up the pressure against the diminutive point guard. On Wednesday, Nebraska came with a variation, which this uneducated blogger will call a 'soft hedge'. To the screencaps!
After Michigan reset up top, McGary comes over to set a screen for Burke. The key player for Nebraska will be McGary's man, Brandon Ubel (#13), who in this frame is fighting through a screen by Tim Hardaway Jr.
As McGary sets the (not great) pick, Burke's man fights hard over the top; his responsibility is to make sure Burke can't pull up for three. Instead of hedging hard, Ubel positions himself a few feet inside the arc; his primary objective is to take away the drive.
Burke's man has successfully gone over the screen and recovered position, with Ubel in position to stymie any attempt to attack the basket off the dribble. Meanwhile, Hardaway's man (#24 Dylan Talley, standing right below the 'B' in the paint) has sunk back to defend a pass to McGary on the roll.
With Burke contained, Ubel slides back onto McGary while Talley heads out towards Hardaway.
I should probably have kept the next part in the video: Talley is late getting back out to Hardaway, who drives to the free-throw line and knocks down a jumper. Still, that was a tougher shot than what Michigan usually produces off the pick and roll (a layup or an open three), and I don't think Talley needed to sink so far into the lane with Ubel falling back.
What does the soft hedge accomplish? A few things.
No open threes. With the guard going hard over the top, Burke doesn't get a good opportunity to pull up for three, especially with Ubel in position to step out and contest.
No dribble drive. With the way the defense is aligned, if Burke wants to drive he can only go to his left—straight into Ubel. That's not much of an option.
No easy slip. One of the ways Michigan counters the hard hedge is to have the screener "slip" the pick—roll to the basket before fully setting the pick, ideally to receive an early pass before the double can get to Burke. With the big hanging back in this case, that option isn't there either.
Of course, there's no perfect way to defend the pick and roll, or John Stockton and Karl Malone wouldn't be in the Hall of Fame. I see two counters to the soft hedge. One is what Michigan did above: kick it back out to the wing (in this case, Hardaway), who should have an open look from deep or the opportunity to drive if his defender is late to recover or closes out too hard.
The other actually occurred a few minutes earlier in the game and should've resulted in an easy two points. On this play, Nebraska defends the initial pick in the same fashion; instead of rolling to the basket, however, McGary doubles back and sets another screen going the opposite way. The Huskers are forced to double Burke, and McGary slips the pick; Burke's feed is on the mark, but McGary's dunk attempt ricochets off the back iron:
Surprisingly, Michigan didn't really go back to this tactic despite the fact that it should've resulted in a (successful) dunk.
While Nebraska's defense did a solid job of limiting Michigan's points off the pick and roll, I don't think this is the magic bullet to stop that aspect of the Wolverine offense. The picture-paged example shows some sloppy play from Michigan; McGary's pick is too shallow, allowing Burke's man an easy path over the top, and the offensive spacing on the perimeter isn't ideal. Then, when Michigan countered, they did everything right except convert an open dunk.
The soft hedge is another way to slow down Burke, however, and does a good job of forcing him to give up the basketball—any defense that takes the ball away from Michigan's best player is one we'll likely see a fair amount moving forward.