Cleveland Browns quarterback Baker Mayfield warms up before an NFL football game against the Baltimore Ravens, Sunday, Dec. 30, 2018, in Baltimore.

Carolina Panthers defensive end Mario Addison warms up with Super Mario cleats before an NFL football game against the New Orleans Saints in New Orleans, Sunday, Dec. 30, 2018.

New Orleans Saints running back Mark Ingram carries the ball during an NFL football game between the Carolina Panthers and the New Orleans Saints in New Orleans, Sunday, Dec. 30, 2018.

Carolina Panthers running back Kenjon Barner during an NFL football game against the New Orleans Saints in New Orleans, Sunday, Dec. 30, 2018.

Pittsburgh Steelers wide receiver Eli Rogers reacts during an NFL game against the Cincinnati Bengals on Sunday, Dec. 30, 2018 in Pittsburgh, PA.

Los Angeles Rams defensive end Aaron Donald celebrates during an NFL football game against the San Francisco 49ers, Sunday, Dec. 30, 2018 in Los Angeles.

Atlanta Falcons quarterback Matt Ryan looks to pass during an NFL game against the Tampa Bay Buccaneers, Sunday, Dec. 30, 2018 in Jacksonville, Fla.

Pittsburgh Steelers quarterback Ben Roethlisberger warms up before an NFL football game against the Cincinnati Bengals, Sunday, Dec. 30, 2018, in Pittsburgh.

New Orleans Saints quarterback Teddy Bridgewater during an NFL football game against the Carolina Panthers in New Orleans, Sunday, Dec. 30, 2018.

Members of the Indianapolis Colts huddle prior to an NFL football game against the Tennessee Titans, Sunday, Dec. 30, 2018 in Nashville, Tenn.