Texans' J.J. Watt declared out for the rest of Sunday Night Football

Houston Texans defensive end J.J. Watt has been carted off the field on Sunday Night Football with what appeared to be a left knee injury.

What It Means:

Watt is being sent for X-rays on his left knee, and is officially out for the rest of the game. Trainers were testing his ACL and MCL before leaving. Fans in Houston were literally crying as he got carted off. More information should be known by tomorrow.

Watt had recorded one tackle before leaving.