The Cardinals have signed QB Brian St. Pierre as the Steelers’ pipeline continues to flow to Arizona.  St. Pierre is a big QB at 6′3″, 230 pounds but he doesn’t have much experience.  He has only played in 1 game in his NFL career and he threw 1 incomplete pass.  He also carried the ball 4 times for -3 yards (-0.8 ypc).  St. Pierre will be nothing more than the #3 QB for the Cardinals in 2008.