Tennessee right tackle David Stewart has been carted off the field after hurting his right leg on the opening series against the Houston Texans.
Stewart was blocking on a 26-yard run play by Chris Johnson when Texans linebacker Barrett Ruud rolled into his right leg. Trainers put an air cast on Stewart's lower right leg, while a cart quickly came out to pick him up.
He was taken into the locker room for observation. Mike Otto replaced Stewart.
The right tackle had started 103 games since being drafted in 2005.
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