A fan holds up a sign for Oakland Raiders cornerback Charles Woodson before an NFL football game between the Oakland Raiders and the San Diego Chargers in Oakland, Calif., Thursday, Dec. 24, 2015. (AP Photo/Tony Avelar)

Denver Broncos super fan dressed as Darth Vader before an NFL regular season game against the Baltimore Ravens on Sunday, Sept. 13, 2015 in Denver. The Broncos won the game, 19-13. (Ric Tapia/NFL)

A fan in the stands wearing Darth Vader mask and Carolina Panthers quarterback Cam Newton (1) jersey the week the new Star Wars movie opened in theaters " Star Wars:The Force Awakens" during the week fifteen regular season NFL football game between the Carolina Panthers and the New York Giants on Sunday, Dec. 20, 2015 in East Rutherford, NJ. The Panthers beat the Giants 38 - 35. (David Drapkin via AP)

Two Green Bay Packers fans dress up in team gear, complete with a cheesehead hat and a Darth Vader hat, make an appearance at the Super Bowl media center during the week of NFL Super Bowl XLV (between the Pittsburgh Steelers and the Green Bay Packers) on Friday, February 4, 2011, in Dallas, Texas. (AP Photo/Paul Spinelli)

Oakland Raiders fan with Star Wars movie outfit an NFL football game against the Denver Broncos in Oakland, Calif., Sunday, Sept. 27, 2009. (AP Photo/Ben Margot)

A Denver Broncos fan dressed as Darth Vader cheers during a preseason NFL football game against the Buffalo Bills on Saturday, Aug. 20, 2011, in Denver. (AP Photo/Chris Schneider)

Oakland Raiders fans pose for photos while tailgating at O.co Coliseum before an NFL football game between the Oakland Raiders and the San Diego Chargers in Oakland, Calif., Thursday, Dec. 24, 2015. (AP Photo/Jeff Chiu)

A Seattle Seahawks fan dressed as Chewbacca for Halloween cheer against the Cincinnati Bengals in the first half of an NFL football game, Sunday, Oct. 30, 2011, in Seattle. (AP Photo/Ted S. Warren)

A Cincinnati Bengals fan wears a Star Wars costume in the first half of an NFL football game against the Indianapolis Colts, Sunday, Oct. 16, 2011, in Cincinnati. (AP Photo/Tom Uhlman)

Scott Mason carries a toy blaster while wearing his "Steel City Storm Trooper" costume at a Pittsburgh Steelers pep rally, Thursday, Feb. 3, 2011 in Pittsburgh. Mason won a contest for the best costume. The Steelers face the Green Bay Packers in NFL football's Super Bowl XLV on Sunday, in Arlington, Texas. (AP Photo/Keith Srakocic)

Baltimore Ravens fan Mark Denis of Baltimore, Md., dressed in a Ravens' Halloween costume, tailgates before an NFL football game against the Baltimore Ravens in Jacksonville, Fla., on Monday, Oct. 24, 2011. (AP/Photo Stephen Morton)

Fans in Halloween costumes cheer in the first quarter of an NFL football game between the Tennessee Titans and the Indianapolis Colts on Sunday, Oct. 30, 2011, in Nashville, Tenn. (AP Photo/Wade Payne)

A Houston Texans fan wears face paint before an NFL football game against the New Orleans Saints, Sunday, Nov. 29, 2015, in Houston. (AP Photo/Eric Christian Smith)

Miami Dolphins fans calling themselves the Fintroopers pose for photographs in their Star Wars Miami Dolphins themed costumes during an NFL fan rally in Trafalgar Square, in London, Saturday, Oct. 3, 2015. The New York Jets are preparing for an NFL football game against the Miami Dolphins at London's Wembley stadium on Sunday. (AP Photo/Matt Dunham)

A San Diego Chargers fan wears a Star Wars outfit during the NFL week 1 regular season football game against the Arizona Cardinals on Monday, Sept. 8, 2014 in Glendale, Ariz. The Cardinals won the game 18-17. (AP Photo/Paul Spinelli)

NFL fans enjoy the rally at the NFL Fan Festival at Trafalgar Square on Saturday, Oct. 3, 2015 in London. (Ben Liebenberg/NFL)

A Cleveland Browns fan wears a team jersey and a Star Wars movie stormtrooper helmet during the 2015 week 8 regular season NFL football game against the Arizona Cardinals on Sunday, Nov. 1, 2015 in Cleveland. The Cardinals won the game 34-20. (Paul Spinelli via AP)

Fans are seen in the stands during the fourth quarter of an NFL football game between the St. Louis Rams and the Arizona Cardinals on Sunday, Dec. 6, 2015, in St. Louis. (AP Photo/Tom Gannam)

A person dressed as Darth Vader stands in the end zone during the week 8 NFL game between the Seattle Seahawks against the St. Louis Rams in St. Louis, Missouri on Monday, October 28, 2013. The Seahawks defeated the Rams 14-9. (AP Photo/Scott Boehm)

Oakland Raiders Dark Raiders fan watches during an NFL game against the San Francisco 49ers on Sunday, December 7, 2014 at O.co Coliseum. The Raiders defeated the 49ers 24-13. (AP Photo/Kevin Terrell)

An Arizona Cardinals fan wears a team jersey and a painted face that makes him look like a creature from the movie Star Wars during the 2015 week 8 regular season NFL football game against the Cleveland Browns on Sunday, Nov. 1, 2015 in Cleveland. The Cardinals won the game 34-20. (Paul Spinelli via AP)

A Pittsburgh Steelers fan wears a storm trooper costume and shows his "Terrible Towel" during an NFL football game against the Washington Redskins on Sunday, Oct. 28, 2012, in Pittsburgh. (AP Photo/Don Wright)