NASHVILLE, Tenn. - Tennessee right tackle David Stewart was carted off the field after breaking his right leg on the opening series against the Houston Texans.

Stewart was blocking on a 26-yard running 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, and officials later announced Stewart had a broken leg. Mike Otto replaced Stewart.

The right tackle had started 103 games since being drafted in 2005.

The Titans had a second offensive lineman hurt in the first half when left guard Steve Hutchinson injured his right knee, and his return was questionable.

Houston cornerback Brice McCain, starting with Johnathan Joseph out, hurt his left foot in the first half, and his return was questionable.