San Francisco 49ers tight end Vernon Davis (85) runs past Buffalo Bills 

San Francisco 49ers tight end Vernon Davis (85) runs past Buffalo Bills defensive back Justin Rogers (26) during the second quarter of an NFL football game in San Francisco, Sunday, Oct. 7, 2012. (AP Photo/Tony Avelar)
Associated Press
San Francisco 49ers tight end Vernon Davis (85) runs past Buffalo Bills defensive back Justin Rogers (26) during the second quarter of an NFL football game in San Francisco, Sunday, Oct. 7, 2012. (AP Photo/Tony Avelar)
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