Harrison: Week 5 predictions
Elliot Harrison gives his picks for every Week 5 bout, including the 13th meeting between Peyton Manning and Tom Brady. More ...
NFL Network's Rebecca Haarlow, who's in St. Louis for Thursday's NFC West showdown, also reported Wednesday that Jackson said he'd be ready to play.
Jackson had seven consecutive 1,000-yard rushing seasons entering 2012, but he's off to a slow start after four games, with 59 carries for just 195 yards and no touchdowns. He has been listed as questionable for the last three games, but so far he has yet to miss any action.