2012 NFC free-agency grades

The NFL landscape has shifted since the New York Giants beat the New England Patriots in Super Bowl XLVI on Feb. 5. Peyton Manning has a new team, Mario Williams has a new home and the Washington Redskins made a blockbuster trade for the rights to the No. 2 pick.

Matt Williamson grades all 32 NFL teams on their free-agent acquisitions and trades, beginning with the AFC. This is the file for the entire NFC.

San Francisco 49ers

Key additions: S Dashon Goldson (franchised), QB Alex Smith (re-sign), CB Carlos Rogers (re-sign), WR Mario Manningham, LB Ahmad Brooks (re-sign), WR Randy Moss, RB Brandon Jacobs, QB Josh Johnson, CB Perrish Cox, WR Ted Ginn (re-sign), LB Tavares Gooden (re-sign)
Key losses: CB Shawntae Spencer, WR Josh Morgan, C Adam Snyder

To see the grades for the rest of the NFC -- including which team got a D-minus -- you must be an ESPN Insider. Sign up now!

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Matt Williamson

ESPN.com

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• Hosts "Football Today" podcast
• Joined ESPN in 2005
• Was an NFL and college scout for the Cleveland Browns