I think, by the season's end, Jake Locker will be the starting quarterback for the Titans.
Now, saying that Locker is the future starting quarterback isn't news to anyone.
The real question is when he'll assume the role.
Hasselbeck was very good last year overall. Considering that he was without Kenny Britt for most of the season, he put up some good passing numbers, but he started to struggle at the season's end.
Hasselbeck will probably start the season, but since he isn't getting any younger, I'm willing to bet that when he struggles around midseason, Locker will be sent in to take over.
Locker already showed a lot of potential last season. His accuracy came as advertised, but he already looked like a guy that the team could rally around and a good decision-maker.
Now that he's had an entire offseason under the tutelage of Chris Palmer, he'll be better.
That potential that he showed last season will stop being just potential by next year.