Green Bay Packers' Clay Matthews (52) reacts after sacking San Francisco 49ers' Alex Smith during the second half of an NFL football game Sunday, Sept. 9, 2012, in Green Bay, Wis. The 49ers won 30-22. (AP Photo/Mike Roemer)

Photo by: Mike Roemer

Green Bay Packers' Clay Matthews (52) reacts after sacking San Francisco 49ers' Alex Smith during the second half of an NFL football game Sunday, Sept. 9, 2012, in Green Bay, Wis. The 49ers won 30-22. (AP Photo/Mike Roemer)