Green Bay coach Mike McCarthy says there’s a chance that running back Ty Montgomery could play on Sunday against Baltimore at Lambeau Field. Montgomery was still being examined Monday for the rib injury he aggravated Sunday when he ran for 54 yards and a touchdown while playing only the first half of the Packers’ win at Chicago. The coach said running back Aaron Jones suffered a knee injury but did not confirm media reports that Jones would be out 3-6 weeks with a damaged right M-C-L ligament. Rookie Jamaal Williams could get the start against the Ravens after he had 67 yards in Chicago. The Packer players are off today (Tuesday) and will start practicing tomorrow (Wednesday) for the Ravens’ contest.