Pittsburgh Steelers wide receiver Antonio Brown (84) is tackled by Kansas City Chiefs defensive back Jamell Fleming (30) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs kicker Cairo Santos (5) boots a field goal out of the hold of punter Dustin Colquitt (2) during the first half of an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers wide receiver Markus Wheaton (11) runs after taking a pass from quarterback Ben Roethlisberger with Kansas City Chiefs defensive back Kelcie McCray (24) in pursuit during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Pittsburgh Steelers running back Le'Veon Bell (26) carries the ball during the first half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) throws a pass during the first half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs quarterback Alex Smith (11) throws a pass during the first half of an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Pittsburgh Steelers running back Le'Veon Bell (26) is tackled by Kansas City Chiefs defensive end Jaye Howard (96) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs quarterback Alex Smith (11) passes under pressure by Pittsburgh Steelers defensive end Cameron Heyward (97) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Pittsburgh Steelers wide receiver Antonio Brown (84) is tackled by Kansas City Chiefs defensive back Jamell Fleming (30) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Kansas City Chiefs quarterback Alex Smith (11) is shoved out of bounds by Pittsburgh Steelers outside linebacker Jason Worilds (93) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) walks on the sideline during the first half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs running back De'Anthony Thomas (13) runs after a catch with Pittsburgh Steelers cornerback Brice McCain (25) defending during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Pittsburgh Steelers running back Le'Veon Bell (26) celebrates his 1-yard touchdown run during the first half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs running back De'Anthony Thomas (13) is tackled by Pittsburgh Steelers defensive back Ross Ventrone (35) during the first half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs quarterback Alex Smith (11) is tackled by Pittsburgh Steelers outside linebacker James Harrison (92) and Stephon Tuitt (91) during second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs running back Jamaal Charles (25) carries the football with Pittsburgh Steelers inside linebacker Vince Williams (98) defending during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Kansas City Chiefs running back Knile Davis (34) is tackled by Pittsburgh Steelers wide receiver Darrius Heyward-Bey (85) during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Kansas City Chiefs quarterback Alex Smith (11) is tackled by Pittsburgh Steelers defensive end Cameron Heyward (97), and Steelers outside linebacker Jason Worilds (93) after rushing for a first down during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers inside linebacker Vince Williams (98) celebrates with linebacker Ryan Shazier (50) after recovering a fumble by Kansas City Chiefs running back Jamaal Charles (25) during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Kansas City Chiefs running back Jamaal Charles (25) fumbles and Pittsburgh Steelers inside linebacker Vince Williams, right, reaches to recover the ball during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers wide receiver Antonio Brown (84) celebrates his 3-yard touchdown catch from quarterback Ben Roethlisberger with tight end Heath Miller (83) during the second half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) throws a pass during the second half of an NFL football game against the Kansas City Chiefs in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers tight end Heath Miller (83) is tackled by Kansas City Chiefs defensive back Kurt Coleman (27) after making a catch during the second half of an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Tom Puskar)

Pittsburgh Steelers safety Robert Golden (21) celebrates as he walks off the field after a 20-12 win over the Kansas City Chiefs in an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers head coach Mike Tomlin, right, and Kansas City Chiefs head coach Andy Reid meet on the field after an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. The Steelers won 20-12. (AP Photo/Don Wright)

Pittsburgh Steelers defensive end Brett Keisel (99) celebrates as he walks off the field following a 20-12 win over the Kansas City Chiefs in an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers wide receiver Antonio Brown (84) listens to a question during a post-game press conference following a 20-12 win over the Kansas City Chiefs in an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)

Pittsburgh Steelers head coach Mike Tomlin answers a question at a post-game press conference following a 2-12 win over the Kansas City Chiefs in an NFL football game in Pittsburgh, Sunday, Dec. 21, 2014. (AP Photo/Don Wright)