Update: Jadeveon Clowney was held out of practice Thursday. He had a helmet-to-helmet collision during Wednesday's practice.

The Texans were having him checked out for a potential head injury and he will likely have to pass the NFL concussion protocol before heading back out onto the practice field. Obviously there is concern and the team would hate to lose him at this point in the preseason, but they also have to think long-term and would hate for this to suddenly be a busted No. 1 pick.ANALYST: Howard Bender