Fans pack Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Fans walk up Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

A fan poses for a photo on Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Fans pack Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Fans pack Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans head coach Mike Vrabel walks on the field before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Los Angeles Chargers running back Melvin Gordon stretches as he warms-up before an NFL football game against Tennessee Titans at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Fans take a selfie on Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Los Angeles Chargers running back Melvin Gordon stretches as he warms-up before an NFL football game against Tennessee Titans at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Players warm-up before an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans head coach Mike Vrabel walks on the field before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Fans take a selfie on Wembley Way as they arrive for an NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

A close-up of the boots of Tennessee Titans quarterback Marcus Mariota as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

A close-up of the boots of Tennessee Titans quarterback Marcus Mariota as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

One of the boots of Tennessee Titans quarterback Marcus Mariota as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

One of the boots of Tennessee Titans quarterback Marcus Mariota as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans head coach Mike Vrabel stands on the pitch before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans quarterback Marcus Mariota, center, catches the ball as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans quarterback Marcus Mariota warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

The officiating crew pose for a photo before the NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

The officiating crew pose for a photo before the NFL football game between Tennessee Titans and Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans running back Derrick Henry (22) catches the ball as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Amy Adams Strunk, the controlling owner of the Tennessee Titans smiles before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Amy Adams Strunk, the controlling owner of the Tennessee Titans stands on the field before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Amy Adams Strunk, center, the controlling owner of the Tennessee Titans smiles before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota (8) passes the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22) catches the ball as he warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Tim Ireland)

Tennessee Titans quarterback Marcus Mariota (8) passes the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans defensive tackle DaQuan Jones (90), left, warms-up with Tennessee Titans head coach Mike Vrabel before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans linebacker Wesley Woodyard (59) during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22) during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22) holds the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22), center, runs with the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota (8) passes the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota (8), center, passes the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota (8) warms-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22) runs with the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans running back Derrick Henry (22) during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)

Tennessee Titans quarterback Marcus Mariota (8) passes the ball during the warm-up before an NFL football game against Los Angeles Chargers at Wembley stadium in London, Sunday, Oct. 21, 2018. (AP Photo/Matt Dunham)