Pittsburgh Steelers quarterback Ben Roethlisberger (7) warms up prior to an NFL football game against the Denver Broncos, Sunday, Nov. 25, 2018, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos quarterback Case Keenum (4) warms up prior to an NFL football game against the Pittsburgh Steelers, Sunday, Nov. 25, 2018, in Denver. (AP Photo/Jack Dempsey)

Pittsburgh Steelers wide receiver Antonio Brown (84) greets quarterback Ben Roethlisberger (7) prior to an NFL football game against the Denver Broncos, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)

Denver Broncos quarterback Case Keenum (4) looks to throw against the Pittsburgh Steelers during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/Jack Dempsey)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) throws against the Denver Broncos during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)

Pittsburgh Steelers tight end Xavier Grimble (85) fumbles at the end zone as Denver Broncos strong safety Will Parks (34) makes the hit during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. Grimble The Broncos recovered the ball. (AP Photo/Jack Dempsey)

Denver Broncos free safety Justin Simmons (31) tackles Pittsburgh Steelers wide receiver Ryan Switzer (10) during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/Jack Dempsey)

Pittsburgh Steelers running back James Conner (30) runs as Denver Broncos free safety Justin Simmons (31) and defensive end Shelby Harris reach for the tackles during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)

Pittsburgh Steelers tight end Xavier Grimble (85) runs towards the end zone as Denver Broncos strong safety Will Parks (34) prepares to make the hit during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. Grimble fumbled before he crossed the goal line on the hit and the Broncos recovered the ball. (AP Photo/Jack Dempsey)

Pittsburgh Steelers running back James Conner (30) runs as Denver Broncos strong safety Darian Stewart (26) pursues during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. Conner fumbled on the play and the Broncos recovered. (AP Photo/David Zalubowski)

Pittsburgh Steelers wide receiver JuJu Smith-Schuster (19) breaks free for a touchdown as Denver Broncos cornerback Bradley Roby, front, and strong safety Darian Stewart pursue during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/Jack Dempsey)

Pittsburgh Steelers kicker Chris Boswell (9) throws a touchdown pas on a fake field goal attempt during the first half of an NFL football game against the Denver Broncos, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) celebrates his touchdown throw to wide receiver JuJu Smith-Schuster (19) during the first half of an NFL football game against the Denver Broncos, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) throws as Denver Broncos defensive end Shelby Harris (96) makes the hit during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. Roethlisberger left the game after the hit but returned. (AP Photo/Jack Dempsey)

Denver Broncos strong safety Darian Stewart recovers a fumble by Pittsburgh Steelers running back James Conner (30) as teammate free safety Justin Simmons (31) purses during the first half of an NFL football game, Sunday, Nov. 25, 2018, in Denver. (AP Photo/David Zalubowski)