Referee Ken Roan shown during the first half of an NFL football game between the Minnesota Vikings and the San Francisco 49ers Sunday, Sept. 23, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Photo by: Genevieve Ross

Referee Ken Roan shown during the first half of an NFL football game between the Minnesota Vikings and the San Francisco 49ers Sunday, Sept. 23, 2012, in Minneapolis. (AP Photo/Genevieve Ross)