Posted by ESPN.com's Mike Sando
The 49ers became one of four teams to add at least three unrestricted free agents from other teams when they reached agreement with defensive lineman Demetric Evans.
Evans comes to the 49ers from the Redskins. He projects as a backup defensive end. He is listed at 6-foot-4 and 287 pounds.
Aubrayo Franklin is the only true nose tackle on the team. Sopoaga played the position two years ago.