"Titans running back Chris Johnson is expected to play against the Jaguars on Saturday despite limited practice time because of a sprained ankle.

Johnson, who was injured in the fourth quarter of Sunday's loss at Indianapolis, was limited in Thursday's practice.

Coach Mike Munchak said that barring a setback, Johnson should be "fine" to play.

"I think he was being careful, no doubt," Munchak said. "But he did a lot more than he did (Wednesday) and looked pretty decent in what he did. We would assume he is ready to play on Saturday."

Rookie running back Jamie Harper, now the backup because Javon Ringer (hand) is on injured reserve, got additional work this week.

Harper has 19 yards on nine carries, but Munchak said the team has confidence in him "and if he has to take 10-15 carries, I think he feels pretty good about it."

Johnson is 70 yards from his fourth 1,000-yard season."