Biography: Johnson flirted with entering the draft after both his sophomore and junior seasons, but returned to Purdue for his senior year after getting word that he was projected as a second-round pick. He was the Big Ten player of the year and defensive player of the year as well as being a consensus All-American after averaging 20.5 points, 8.6 boards and 2.3 blocks. However, not a whole lot has changed regarding Johnson's draft stock - even in a class that's hardly loaded. The Boilermakers ran their offense through Johnson, something no NBA team will do, and his impressive numbers can at least partially be attributed to the absence of Robbie Hummel. The biggest concern with Johnson is his lack of bulk for a player who is 6-foot-10. While he added 10 to 15 pounds prior to his final season in West Lafayette, he could still stand to add some weight - which may not be entirely realistic on his slender frame. Even if he doesn't get much bigger, Johnson should be able to score at the next level, particularly after spending last summer working with Michael Jordan's former trainer to add more post moves and extend the range on his jumper. Despite his defensive accolades, though, Johnson is merely average at that end of the floor. His length helps him contest shots and he gets many of his blocks rotating from the weak side, but he's not a great one-on-one defender. Johnson got better each year in college, but many scouts think he's done improving. That's what will ultimately prevent him from going in the first round on draft day.