Source: Palmer out vs. Rams, maybe preseason

Posted by ESPN.com's James Walker

Cincinnati Bengals starting quarterback Carson Palmer (ankle) will miss his second straight preseason game Thursday night against the St. Louis Rams, a source tells the AFC North blog.


The source also added that the team may also take extreme caution with Palmer's sprained ankle and is contemplating sitting him for the remainder of the preseason. Much of it will depend on how the ankle responds leading up to next week's exhibition game Sept. 3 against the Indianapolis Colts.

Palmer has missed a lot of practice time since suffering the injury Aug. 14 against the New Orleans Saints. The quarterback did some light throwing in practice this week but didn't participate in team drills.

If Palmer can make it back in time for the team's final exhibition, he would typically play a series or two, which is why the Bengals are considering resting him altogether. Palmer also is coming off a season-ending elbow injury.

Backup quarterback J.T. O'Sullivan will start Thursday night against the Rams. Last week O'Sullivan did a solid job with the first team, throwing for 141 yards and a touchdown in a 7-6 victory over the New England Patriots.

At the very least, the Bengals expect Palmer to be fully recovered when they open the regular season at home Sept. 13 against the Denver Broncos.