NFL football fans arrive at Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

NFL football fans arrive at Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

An NFL football fan poses for a photo with Tampa Bay Buccaneers mascot Captain Fear outside Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers quarterback Jameis Winston, right, warms up before an NFL football game against the Carolina Panthers, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers quarterback Kyle Allen warms up before an NFL football game against the Tampa Bay Buccaneers, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers running back Christian McCaffrey (22) is tackled by Tampa Bay Buccaneers strong safety Darian Stewart (24) during the first quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Peyton Barber (25) is tackled by Carolina Panthers strong safety Eric Reid (25) and linebacker Devante Bond (59) during the first quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) crosses the goal line to score a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) reacts after scoring a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

A Carolina Panthers fan arrives at Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Peyton Barber (25) is tackled by Carolina Panthers strong safety Eric Reid (25) and linebacker Devante Bond (59) during the first quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

NFL football fans arrive at Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) celebrates with teammates after scoring a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) reacts after scoring a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Carolina Panthers wide receiver D.J. Moore (12) makes a catch against Tampa Bay Buccaneers cornerback Vernon III Hargreaves (28) during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) crosses the goal line to score a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Carolina Panthers running back Christian McCaffrey (22) is tackled by Tampa Bay Buccaneers strong safety Darian Stewart (24) during the first quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Ronald Jones (27) celebrates with teammates after scoring a touchdown against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

NFL football fans arrive at Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

An NFL football fan poses for a photo with Tampa Bay Buccaneers mascot Captain Fear outside Tottenham Hotspur Stadium to watch an NFL football game between the Tampa Bay Buccaneers and the Carolina Panthers, Sunday, Oct. 13, 2019, in London. (AP Photo/Alastair Grant)

Carolina Panthers running back Christian McCaffrey (22) reacts after scoring a touchdown against the Tampa Bay Buccaneers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers cornerback Javien Elliott (23) celebrates with teammates after intercepting a pass against the Tampa Bay Buccaneers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers running back Christian McCaffrey (22) crosses the goal line to score a touchdown against the Tampa Bay Buccaneers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers running back Christian McCaffrey (22) reacts after scoring a touchdown against the Tampa Bay Buccaneers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

The Carolina Panthers huddle in the end zone during the second quarter of an NFL football game against the Tampa Bay Buccaneers, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers quarterback Kyle Allen (7) passes against the Tampa Bay Buccaneers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Tampa Bay Buccaneers quarterback Jameis Winston (3) passes against the Carolina Panthers during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Tampa Bay Buccaneers wide receiver Mike Evans (13) can't make the catch on a pass down field as Carolina Panthers cornerback James Bradberry (24) defends during the second quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Carolina Panthers running back Christian McCaffrey (22) is congratulated by quarterback Kyle Allen after scoring a touchdown against the Tampa Bay Buccaneers during the first quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers wide receiver Curtis Samuel (10) reacts as he scores a touchdown against the Tampa Bay Buccaneers during the third quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Carolina Panthers wide receiver Curtis Samuel (10) celebrates with wide receiver D.J. Moore (2) after scoring a touchdown against the Tampa Bay Buccaneers during the third quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers wide receiver Curtis Samuel (10) reacts after scoring a touchdown against the Tampa Bay Buccaneers during the third quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Carolina Panthers wide receiver Curtis Samuel (10) makes a touchdown catch against Tampa Bay Buccaneers cornerback Carlton Davis (33) during the third quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Tim Ireland)

Tampa Bay Buccaneers tight end Cameron Brate (84) makes a touchdown catch against the Carolina Panthers during the fourth quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers tight end Cameron Brate (84) celebrates with quarterback Jameis Winston (3) after making a touchdown catch against the Carolina Panthers during the fourth quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Tampa Bay Buccaneers running back Dare Ogunbowale (44) crosses the goal line for a touchdown against the Carolina Panthers during the fourth quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. (AP Photo/Alastair Grant)

Carolina Panthers cornerback James Bradberry (24) intercepts a pass intended forTampa Bay Buccaneers wide receiver Mike Evans (13) in the end zone late in the fourth quarter of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. The Panthers won 37-26. (AP Photo/Alastair Grant)

Carolina Panthers defensive back Ross Cockrell (47) reacts after an interception against the Tampa Bay Buccaneers during the second half of an NFL football game, Sunday, Oct. 13, 2019, at Tottenham Hotspur Stadium in London. The Panthers won 37-26.(AP Photo/Tim Ireland)

El running back de los Panthers de Carolina, Christian McCaffrey (22), entra a la zona de anotación contra los Buccaneers de Tampa Bay, durante el segundo cuarto de un juego de la NFL, el domingo 13 de octubre de 2019, en el estadio Tottenham Hotspur en Londres. (AP Foto/Tim Ireland)

FILE - In this Oct. 13, 2019, file photo, Carolina Panthers running back Christian McCaffrey (22) reacts after scoring a touchdown against the Tampa Bay Buccaneers during the second quarter of an NFL football game at Tottenham Hotspur Stadium in London. Luke McCaffrey, the younger brother of the Panthers’ star running back and son of former NFL receiver Ed McCaffrey, made an unexpected entrance for Nebraska against Indiana last week and turned in a strong performance. (AP Photo/Tim Ireland, File)