Featured photos of the National Football League's most notable aficionados.
A Seattle Seahawks fan wears an Alien mask while cheering the Seahawks against the San Francisco 49ers at CenturyLink Field in Seattle, Washington on November 22, 2015. The Seahawks beat the 49ers 29-13. Photo by Jim Bryant/UPI
A Seattle Seahawks fan watches the game against the San Francisco 49ers at CenturyLink Field in Seattle, Washington on November 22, 2015. The Seahawks beat the 49ers 29-13. Photo byJim Bryant/UPI
A San Francisco 49ers fan cheers for his team against the Seattle Seahawks at CenturyLink Field in Seattle, Washington on November 22, 2015. The Seahawks beat the 49ers 29-13. Photo byJim Bryant/UPI
A Green Bay Packers fan's expression belies her team's performance against the San Francisco 49ers at Levi's Stadium in Santa Clara, California on October 4, 2015. The Packers defeated the 49ers 17-3. Photo by Terry Schmitt/UPI