Fans arrive prior to an NFL football game between the Carolina Panthers and Tampa Bay Buccaneers, Sunday, Oct. 13, 2019 at Tottenham Hotspur Stadium in London.

Fans arrive prior to an NFL football game between the Carolina Panthers and Tampa Bay Buccaneers, Sunday, Oct. 13, 2019 at Tottenham Hotspur Stadium in London.

Carolina Panthers Efe Obada is interviewed by the media after participating at NFL Flag with London school children.

Carolina Panthers participate in NFL Flag with London school children.

Carolina Panthers Tre Boston participates in NFL Flag with London school children.

Carolina Panthers Greg Olsen talks with a participant during the NFL Flag with London school children.

Carolina Panthers arrive at Heathrow Airport, London

Carolina Panthers arrive at Heathrow Airport, London

Man of the match Oakland Raiders running back Josh Jacobs (28) poses with fans after the game.

Oakland Raiders quarterback Derek Carr (4) and Chicago Bears outside linebacker Khalil Mack (52) greet each other after their game at Tottenham Hotspur Stadium, London, Oct. 6, 2019.

Oakland Raiders fans celebrate during a NFL football game against the Chicago Bears at Tottenham Hotspur Stadium in London on Sunday, Oct. 6th 2019.

A Chicago Bears fan celebrates in Tottenham Hotspur Stadium during an NFL football game between the Chicago Bears and the Oakland Raiders, Sunday, Oct. 6, 2019, in London.

Oakland Raiders cornerback Daryl Worley (20), defensive end Arden Key (99) and free safety Erik Harris (25) celebrate an interception against the Chicago Bears at Tottenham Hotspur Stadium, London, Oct. 6, 2019.

Chicago Bears running back David Montgomery (32) celebrates a touchdown during the second half of an NFL football game against the Oakland Raiders at Tottenham Hotspur Stadium, Sunday, Oct. 6, 2019, in London.

Oakland Raiders running back DeAndre Washington (33) is tackled by Chicago Bears inside linebacker Danny Trevathan (59) during the first half of an NFL football game at Tottenham Hotspur Stadium, Sunday, Oct. 6, 2019, in London.

The head referee performs the coin toss before an NFL football game between the Chicago Bears and Oakland Raiders at Tottenham Hotspur Stadium in London on Sunday, Oct. 6th.

The Mayor of London Sadiq Khan and Spurs' chairman Daniel Levy (R) with NFL Commissioner Roger Goodell (L) before the Oakland Raiders and the Chicago Bears play in the NFL London Games at Tottenham Hotspur Stadium in London on Sunday, Oct. 6th, 2019.

Flags are seen while the national anthem is played before during an NFL football game between the Chicago Bears and the Oakland Raiders at Tottenham Hotspur Stadium, Sunday, Oct. 6, 2019, in London.

The Oakland Raiders cheerleaders before an NFL football game between the Chicago Bears and the Oakland Raiders at Tottenham Hotspur Stadium, Sunday, Oct. 6, 2019, in London.

Chicago Bears quarterback Chase Daniel (4) is interviewed during the media huddle after practice at the Allianz Park Stadium, London.

Chicago Bears outside linebacker Khalil Mack (52) during the team practice session at the Allianz Park Stadium, London.

Oakland Raiders wide receiver Tyrell Williams (16) in a British flat cap.

Oakland Raiders quarterback Derek Carr (4) with a British flag game ball.

Oakland Raiders' quarterback Derek Carr gives a press conference after a practice session at the Grove Hotel in Chandler's Cross, Watford, England, Wednesday, Oct. 2, 2019.

Oakland Raiders' head coach Jon Gruden supervises the NFL training session at Watford, England, Wednesday, Oct. 2, 2019.

Oakland Raiders' quarterback Derek Carr takes part an NFL training session at the Grove Hotel in Chandler's Cross, Watford, England, Wednesday, Oct. 2, 2019.

Oakland Raiders players take part in an NFL training session at the Grove Hotel in Chandler's Cross, Watford, England, Wednesday, Oct. 2, 2019. The Oakland Raiders are preparing for an NFL regular season game against the Chicago Bears in London on Sunday.

Oakland Raiders' defensive end Maxx Crosby signs autographs for UK Raiders fans after arriving at London Heathrow airport.