The results of the test weren't immediately available, and coach Jeff Fisher said Young would be considered day to day.

Fisher said the test was to determine the best course of treatment for the 2006 Offensive Rookie of the Year who was injured at the end of a 2-yard run to the sideline midway through the third quarter of Sunday's 13-10 loss to Tampa Bay.

"He could not practice today," Fisher said. "If we had practice today, he'd be sore. But it's not as bad as we thought. So he'll be day to day, and our treatment path will be to try to get him back on the practice field as fast as we can."

The Titans will be without receiver Brandon Jones when they visit Houston (3-3) on Sunday. Fisher said the third-year receiver had arthroscopic surgery on his knee today and will be out a week or two. Jones hurt his right knee on Oct. 7 in a 20-13 win against Atlanta.

Young was 11-of-14 for 120 yards and ran twice for 4 yards before hurting his leg. Kerry Collins replaced Young and finished the game.

The injury has the Titans considering some roster moves with Collins the only other quarterback. Tim Rattay was in training camp, but was released Sept. 1 and signed with Arizona, where he played much of Sunday's loss to Carolina. Ingle Martin, a Nashville native and Green Bay's fifth-round draft pick in 2006, is on the practice squad.

Punter Josh Miller could be cut to make room for a third quarterback because Craig Hentrich has punted the two weeks since a sore back kept him out of a game Sept. 24.