Pictures Detroit Lions vs. San Francisco 49ers 10-17-11 October 17, 2011 / 11:13 AM EDT / CBS News San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions (Photo by Dave Reginek/Getty Images) San Francisco 49ers v Detroit Lions (Photo by Dave Reginek/Getty Images) San Francisco 49ers v Detroit Lions (Photo by Leon Halip/Getty Images) San Francisco 49ers v Detroit Lions (Photo by Leon Halip/Getty Images) San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions DETROIT, MI - OCTOBER 16: Cliff Avril #92 of the Detroit Lions pumps his arms after a tackle during a NFL game against the San Francisco 49ers at Ford Field on October 16, 2011 in Detroit, Michigan. (Photo by Dave Reginek/Getty Images) San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions (Photo by Dave Reginek/Getty Images) San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions San Francisco 49ers v Detroit Lions