Richardson appeared to tweak his left foot midway through Sunday's game against Arizona and Rams trainers evaluated him on the sideline. He did return to finish the game, though.
Asked about Richardson on Wednesday, Rams coach Jeff Fisher said he expected his starting running back to return to the mix in short order.
"Oh, yeah, he'll practice tomorrow," Fisher said. "He just needed some rest."
Elsewhere on the injury report, the Rams got some good news with the return of tight end Cory Harkey. Harkey had been out since the third preseason game against Denver with a knee injury. He was listed as a full participant on the injury report.
For Atlanta, the injury report looks like this: