Scary moment for Vikings as Adrian Peterson is carted off

Nov 20, 2011; Minneapolis, MN, USA; Oakland Raiders receiver Darrius Heyward-Bey (85) suffers an injury when he is hit in the back of the head by the knee of Minnesota Vikings linebacker E.J. Henderson (56) and tackled by safety Jamarca Sanfod (33) in the fourth quarter at Mall of America Field. The Raiders defeated the Vikings, 27-21. Mandatory Credit: Kirby Lee/Image of Sport-US PRESSWIRE

Added November 20th