Members of the grounds crew remove ice from the sidelines before an NFL football game between the Carolina Panthers and the Minnesota Vikings in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Chuck Burton)

Minnesota Vikings' Case Keenum warms up before an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers head coach Ron Rivera, left, talks with Minnesota Vikings head coach Mike Zimmer, right, before an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton warms up before an NFL football game against the Minnesota Vikings in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton (1) is introduced before an NFL football game against the Minnesota Vikings in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Jonathan Stewart (28) falls into the end zone for a touchdown against the Minnesota Vikings during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Jonathan Stewart (28) runs for a touchdown against the Minnesota Vikings during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Jonathan Stewart (28) runs past Minnesota Vikings' Linval Joseph (98) for a touchdown during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton (1) throws a pass against the Minnesota Vikings during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Greg Olsen (88) hobbles off the field during the first half of an NFL football game against the Minnesota Vikings in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton (1) looks to pass under pressure from Minnesota Vikings' Tom Johnson (92) during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Case Keenum (7) escapes the tackle of Carolina Panthers' Captain Munnerlyn (41) during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Minnesota Vikings' Kyle Rudolph (82) reaches in vain for a catch in the end zone as Carolina Panthers' Mike Adams (29) defends during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Case Keenum (7) runs as Carolina Panthers' Mike Adams (29) defends during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Laquon Treadwell (11) runs as Carolina Panthers' Daryl Worley (26) defends during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Case Keenum (7) runs past Carolina Panthers' Kurt Coleman (20) during the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Christian McCaffrey (22) runs past Minnesota Vikings' Xavier Rhodes (29) and Eric Kendricks (54) during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Cam Newton (1) looks to pass as Minnesota Vikings' Everson Griffen (97) closes in during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Case Keenum, right, tries to throw a pass as Carolina Panthers' Mario Addison, left, reaches in during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Minnesota Vikings' Latavius Murray (25) runs as Carolina Panthers' Kurt Coleman (20) defends during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Minnesota Vikings' Case Keenum (7) scrambles as Carolina Panthers' Captain Munnerlyn (41) and Luke Kuechly (59) defend during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Minnesota Vikings' Adam Thielen (19) runs for a touchdown past Carolina Panthers' Mike Adams (29) during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Russell Shepard (19) runs past Carolina Panthers' Luke Kuechly (59) during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Jonathan Stewart (28) leaps over the goal line for a touchdown against the Minnesota Vikings during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton (1) talks with Minnesota Vikings' Case Keenum (7) after an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton (1) celebrates with fans after an NFL football game against the Minnesota Vikings in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Cam Newton (1) runs for a long gain as Minnesota Vikings' Anthony Barr (55) pursues during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Cam Newton (1) runs for a long gain as Minnesota Vikings' Trae Waynes (26) pursues during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Jonathan Stewart (28) dives over the goal line against Minnesota Vikings' Xavier Rhodes (29) for a touchdown during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers' Devin Funchess (17) runs past Minnesota Vikings' Eric Kendricks (54) for a touchdown during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Mike McCarn)

Carolina Panthers' Devin Funchess (17) catches a pass as Minnesota Vikings' Trae Waynes (26) defends during the second half of an NFL football game in Charlotte, N.C., Sunday, Dec. 10, 2017. (AP Photo/Bob Leverone)

Carolina Panthers quarterback Cam Newton (1) celebrates after an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings wide receiver Adam Thielen (19) runs after the catch during an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings quarterback Case Keenum (7) throws on the run during an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers middle linebacker Luke Kuechly (59) before an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings quarterback Case Keenum (7) congratulates Carolina Panthers quarterback Cam Newton (1) after an NFL regular season football game on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers wide receiver Damiere Byrd (18) runs after the catch during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers running back Christian McCaffrey (22) runs during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings running back Latavius Murray (25) runs during an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings safety Andrew Sendejo (34) intercepts the ball against Carolina Panthers quarterback Cam Newton (1) during an NFL regular season football game on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton (1) throws on the run during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings quarterback Case Keenum (7) runs during an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers running back Johnathan Stewart (28) runs during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers wide receiver Devin Funchess (17) touchdown catch during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers corner back James Bradberry (24) intercepts the ball against Minnesota Vikings wide receiver Stefon Diggs (14) during an NFL regular season football game on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton (1) drops back to pass during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton (1) runs during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton (1) signals during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers running back Johnathan Stewart (28) runs during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers running back Johnathan Stewart (28) scores a touchdown during an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings defensive end Everson Griffen (97) before an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Minnesota Vikings tight end Kyle Rudolph (82) catches a touchdown during an NFL regular season football game against the Carolina Panthers on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton (1) enters the field from the tunnel before an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017 in Charlotte, N.C. (Ric Tapia/NFL)

Carolina Panthers quarterback Cam Newton speaks with reporters following an NFL regular season football game against the Minnesota Vikings on Dec. 10, 2017, in Charlotte, N.C.