During his Tuesday press conference, Brad Childress promised the Vikings would be making some roster moves to try and fill the void left by Cedric Griffin who is out for the season with a torn ACL.
Since the Patriots had no extra cornerbacks they wanted to give up for a draft pick, the Vikings resorted to calling free agents, a process that led them to work out and then sign veteran Frank Walker.
Walker played last year with Baltimore, where he notched one interception in 14 games. He has been in the league since 2003, first with the Giants, then for a year with Green Bay, and then for two years with Baltimore.
How much playing time Walker actually sees with the Vikings this weekend against Dallas will depend on whether Chris Cook is able to rush himself back from his meniscus injury. Otherwise, the Vikes figure to start Asher Allen opposite Antoine Winfield, then follow their usual pattern of moving Winfield inside in the nickel, with Lito Sheppard now entering the game at right corner.