San Francisco 49ers quarterback Colin Kaepernick (7) runs past Minnesota Vikings’ Chris Cook (20) on his way towards the end zone for a 78-yard
San Francisco 49ers quarterback Colin Kaepernick (7) runs past Minnesota Vikings' Chris Cook (20) on his way towards the end zone for a 78-yard touchdown in the second quarter of a preseason game at Candlestick Park, in San Francisco, Calif., on Friday, Aug. 10, 2012. (Ray Chavez/Staff) ( RAY CHAVEZ )