GREEN BAY, WI - NOVEMBER 19: Referee Steve Freeman attempts to break up a fight between Geronimo Allison #81 of the Green Bay Packers and Chuck Clark #36 of the Baltimore Ravens in the second quarter at Lambeau Field on November 19, 2017 in Green Bay, Wisconsin. (Photo by Dylan Buell/Getty Images)
DENVER, CO - NOVEMBER 19: Head coach Vance Joseph of the Denver Broncos speaks with a referee during the third quarter. The Denver Broncos hosted the Cincinnati Bengals at Sports Authority Field at Mile High in Denver, Colorado on Sunday, November 19, 2017. (Photo by Joe Amon/The Denver Post via Getty Images)
MINNEAPOLIS, MN - NOVEMBER 19: Minnesota Vikings linebacker Anthony Barr (55) pleads his case to the referee after he is called for roughing the passer on a hit he put on Los Angeles Rams Quarterback Jared Goff (16) during a NFL game between the Minnesota Vikings and Los Angeles Rams on November 19, 2017 at U.S. Bank Stadium in Minneapolis, MN. The Vikings defeated the Rams 24-7. (Photo by Nick Wosika/Icon Sportswire via Getty Images)
PITTSBURGH, PA - NOVEMBER 16: A referee looks on during the game between the Tennessee Titans and the Pittsburgh Steelers on November 16, 2017 at Heinz Field in Pittsburgh, Pa. (Photo by Mark Alberti/ Icon Sportswire)
MINNEAPOLIS, MN - NOVEMBER 19: Minnesota Vikings wide receiver Adam Thielen (19) looks at a referee for a flag that never came during a NFL game between the Minnesota Vikings and Los Angeles Rams on November 19, 2017 at U.S. Bank Stadium in Minneapolis, MN. The Vikings defeated the Rams 24-7. (Photo by Nick Wosika/Icon Sportswire via Getty Images)
