I believe he tore his ACL earlier in the season. So it's pretty severe. He's a very talented center, and arguably the best one in this draft. The fact of the matter is there are several very talented centers in this draft, and most of them don't have the same injury concern that Wilkerson does. So that's a big reason why some mocks have him falling to the 3rd. That's still pretty high for an injured center though.