The offensive line has been inconsistent all year, especially at run blocking. However, pass blocking hasn't been superb either.
Matt Hasselbeck got sacked twice and hit four more times against the Texans, which doesn't sound too bad until you remember that Mario Williams, Houston's best pass-rusher (and maybe its best defensive player), is out for the season with a torn pectoral muscle.
Had he been playing, it could've been much worse for Hasselbeck.
Run blocking has been even worse, which explains why neither Ringer nor Harper have had breakout seasons with the Titans either.
The interior of the Titans line needs to be cleaned out entirely. Eugene Amano may still be a serviceable guard, but he is not capable at playing center at an acceptable level.
Leroy Harris is a subpar blocker and is a false-start machine (he still holds the record for false starts at his alma mater, NC State). Even Jake Scott, who has been a dependable right guard for years, is starting to show his age and will need a replacement soon.
After finding another receiver, the Titans' top priority in the draft and free agency should be to upgrade the interior offensive line.