Detroit Lions quarterback Matthew Stafford reaches back to pass during the first quarter of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Sept. 16, 2012. (AP Photo/Marcio Jose Sanchez)

Photo by: Marcio Jose Sanchez

Detroit Lions quarterback Matthew Stafford reaches back to pass during the first quarter of an NFL football game against the San Francisco 49ers in San Francisco, Sunday, Sept. 16, 2012. (AP Photo/Marcio Jose Sanchez)