"He is getting better. There is no question," Calipari said. "He is understanding defensively what he has to do. He's rebounding the ball better and that leaves him in games. With him in the game, what it does is stretch defenses. We have got four guys who are slashers and now he's shooting the 3. His offensive skills and ability to shoot the ball really help us. If (Doron) Lamb, Miller and Wiltjer are on the floor, you have three 45 to 50 percent shooters (from 3-point range) on the floor. It makes us a better team when he is out there.
"As he gets stronger from the waist down and is able to stay in his stance and bust through where he's bumped and plays, you will see him go to another completely different level. Some come in like Michael Kidd-Gilchrist and are physically advanced even though he is the youngest player on our team, he's physically advanced. Kyle came in not physically advanced. Anthony Davis was not physically advanced. He (Kyle) is trying to figure out where he can go."
Wiljter is averaging 5.7 points, 2.3 rebounds and 13.5 minutes per game. He provided some needed bench minutes at Vanderbilt when Miller and Michael Kidd-Gilchrist were both in foul trouble.
His defensive improvement is what is impressing Calipari the most.
"He even will tell you if you talk to him. He's getting to understand angles, staying down. He just has to get stronger. When he gets stronger , you're going to see one of the best players in the country," Calipari said. "He will be one of the best because he's one of the most skilled, he's long, he's tough, he runs. He just has to get stronger."