Cardinals' Darren Fells: Won't suit up Thursday

Fells (shoulder) has been ruled out of Thursday's contest in San Francisco, Darren Urban of the Cardinals' official site reports.

Analysis:

Fells was unable to log a single practice rep this week due to a stinger, and the short week afforded the Cardinals has forced the team's hand. With quarterback in the hands of Drew Stanton rather than Carson Palmer (concussion) in Week 5, Fells' replacement Jermaine Gresham could serve as a valuable safety valve in a rejiggered offense.