When the Texans drafted Notre Dame defensive tackle Louis Nix in the third round, the move was praised by CBSSports.com's Pete Prisco, who called the decision "a great pick" and wrote "can you imagine him choking off the run with J.J. Watt?"

But he hasn't been practicing because he's on the Physically Unable to Perform list, and on Saturday, coach Bill O'Brien said it's because Nix is still recovering from offseason knee surgery.

“We felt like we wanted to make sure that we could have a healthy Louis Nix and not have to manage him throughout the season," O'Brien said. "As an organization we decided to do that surgery or arthroscopic surgery before training camp and so I believe from what I hear from our medical people that he's working well and he's becoming closer and closer to being able to be back out there at some point.”