Amid dwindling numbers at outside linebacker, the 49ers have signed Kenny Rowe (6-3, 235), who spent training camp with them last year. Rowe, a defensive end at Oregon, joined the 49ers as an undrafted free agent following the end of the lockout.
The team entered Friday's game with two outside linebackers in street clothes - fifth-round pick Darius Fleming and seventh-rounder Cam Johnson. They also lost starter Aldon Smith to a badly bruised hip during the Vikings second offensive series. It's not know when Smith will return, but the injury is not believed to be serious.
Jim Harbagh said the 49ers "dodged a bullet" with the injury. Smith also indicated in a tweet last night that the injury was not severe. "Just a heads up I'm doing ok," he wrote. "Thanks."
The 49ers ended the game with four healthy outside linebackers: starter Ahmad Brooks, Parys Haralson, Eric Bakhtiari and undrafted rookie Kourtnei Brown. Haralson and Bakhtiari, who had two sacks, stood out on Friday.
The 49ers also cut safety Mark LeGree, who spent some time on the practice squad last year. Rookies Trenton Robinson and Michael Thomas have played well at safety, as has recent acquisition Darcel McBath. The 49ers are still at 89 players, one below the maxiumum.
-- Matt Barrows