Viking receiver Martin Nance is making a strong case to make the Viking roster.  Nance leads the team with 4 catches for 88 yards and offensive coordinator Darrell Bevill says Nance has been playing well in practice and in games.  The Vikings usually keep 5 receivers and Bernard Berrian, Sidney Rice, Bobby Wade, and Aundrey Allison appear locked into making the roster.  Nance is competing with Robert Ferguson and Jaymar Johnson for the 5th receiver spot.  It is possible that the Vikings keep 6 receivers though.  The Vikings host Pittsburgh in the 3rd of 4 preseason games Saturday night at 7pm, pregame on AM 1390-the Fan at 6pm.