2013 NFL Fans (31 images)

Arizona Cardinals fans boo their team in the fourth quarter of the Cardinals-Seattle Seahawks game at University of Phoenix Stadium in Glendale, Arizona on October 17, 2013. The Seahawks defeated the Cardinals 34-22. UPI/Art Foxall

Cheering Seahawks fans at CenturyLink Field reached 136.6 decibels during the third quarter of Sunday night's game against the San Francisco 49ers, officially making The Clink the Guinness World Record holder for loudest stadium in Seattle, Washington on September 15, 2013. The Seattle Seahawks beat the 49ers 29-3. UPI/Jim Bryant

Dressed in sci-fi costumes, Baltimore Ravens fans pose for pictures at Sports Authority Field at Mile High in Denver on September 5, 2013. The Baltimore Ravens open the 2013 NFL season on the road at the Denver Broncos, the team they beat in the division playoffs on their way to winning the Super Bowl. UPI/Gary C. Caskey

Miami Dolphins fans celebrate a touchdown against the Carolina Panthers during the first half at Sun Life Stadium in Miami, Florida on November 24, 2013. The Panthers defeated the Dolphins. 20-16. UPI/Susan Knowles