Detroit Lions wide receiver Calvin Johnson (81) walks off the field after the Lions' 34-31 loss to the Houston Texans in overtime of an NFL football game at Ford Field in Detroit, Thursday, Nov. 22, 2012. (AP Photo/Paul Sancya)

Photo by: Paul Sancya

Detroit Lions wide receiver Calvin Johnson (81) walks off the field after the Lions' 34-31 loss to the Houston Texans in overtime of an NFL football game at Ford Field in Detroit, Thursday, Nov. 22, 2012. (AP Photo/Paul Sancya)