With no weak-side shooting threat, Dirk Nowitzki continues to get even more attention than usual from the defense.
Add on the fact that he's not playing well right now and it's easy to see why he looks frustrated. He's gotten only seven shots and has just nine points in 33 minutes.
Still, there have been a lot of times when 6-2 Luke Ridnour has tried to guard him. Nowitzki has to make plays when that happens and he hasn't been able to do so.