Injury roundup: Jadeveon Clowney reportedly tears meniscus

Houston Texans rookie linebacker Jadeveon Clowney limped off the field and headed to the locker room in the second quarter Sunday against the Redskins.

The early prognosis was thought to be "good," head coach Bill O’Brien said in the postgame news conference, but since then multiple reports indicate the injury is more severe.

Clowney, who underwent sports hernia surgery and suffered a concussion earlier this preseason, was reportedly "visibly upset" while being escorted by a trainer into the locker room.

OTHERS WHO ARE HURTING

*49ers cornerback Chris Culliver is out with a concussion. The team also lost starting cornerback Trumaine Brock to a toe injury.

*Bengals tight end Tyler Eifert sustained a significant elbow injury in the first quarter against the Ravens. Linebacker Vontaze Burfict was diagnosed with  concussion-like symptoms. Both were out for the remainder of the game.

*Browns tight end Jordan Cameron exited the game with a shoulder injury.

*Eagles guard Evan Mathis sustained a left knee injury, the team announced. He did not return.  Offensive tackle Allen Barbre exited with an ankle injury.

*Jags announce safety Jonathan Cyprien was ruled out of the second half with head injury.

*Falcons rookie offensive tackle Jake Matthews walked into the locker room early after sustaining an ankle injury. 

*The Redskins announced that tight end Jordan Reed and Barry Cofield are out for the remainder of the game.

*Panthers quarterback Cam Newton was listed as inactive against the Tampa Bay Buccaneeers. FOX Sports NFL insider Jay Glazer first reported the plan was to hold out the quarterback to prevent further injury.