Oakland Raiders wide receiver Darrius Heyward-Bey gives a thumbs up while being taken off the field following an injury during the fourth quarter of an NFL football game against the Pittsburgh Steelers in Oakland, Calif., Sunday, Sept. 23, 2012. Heyward-Bey has been taken to the hospital with a neck injury after a helmet-to-helmet hit from Steelers safety Ryan Mundy that was not penalized. (AP Photo/Marcio Jose Sanchez)

Photo by: Marcio Jose Sanchez

Oakland Raiders wide receiver Darrius Heyward-Bey gives a thumbs up while being taken off the field following an injury during the fourth quarter of an NFL football game against the Pittsburgh Steelers in Oakland, Calif., Sunday, Sept. 23, 2012. Heyward-Bey has been taken to the hospital with a neck injury after a helmet-to-helmet hit from Steelers safety Ryan Mundy that was not penalized. (AP Photo/Marcio Jose Sanchez)