Locker is dealing with a wrist strain that he sustained last Sunday. He missed practice Wednesday, but Titans coach Ken Whisenhunt said Locker's progress on Friday was encouraging.
If Locker is unable to play, backup Charlie Whitehurst will get the start for Tennessee.
Whitehurst has not started an NFL game since 2011. After Wednesday's practice, Whisenhunt said "I've seen [Whitehurst] go in and perform well, so I don't really have a question as far as what it would be like Sunday with Charlie."
The Titans have lost two games in a row and stand at 1-2 on the season.
- Molly Geary