Philip Rivers smiles on the sideline during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif.

Kellen Clemens and Philip Rivers arrive at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

The Chargers prepare to play against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Denzel Perryman arrives at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Korey Toomer arrives at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Keenan Allen arrives at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Tyrell Williams runs at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Sean Culkin and Sean McGrath warm-up at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Melvin Ingram arrives at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Tre Boston stretches at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Isaac Rochell arrives at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

The Chargers cornerbacks strike a pose at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

The Chargers tight ends strike a pose at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Philip Rivers spends time with a fan before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Philip Rivers walks onto the field at StubHub Center before an NFL football game against the Oakland Raiders on Sunday Dec. 31, 2017, in Carson, CA.

Melvin Gordon runs for a first down during the first half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Alex Gallardo)

Keenan Allen celebrates his touchdown with teammate Melvin Gordon during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Tyrell Williams makes a play during the first half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Alex Gallardo)

Rayshawn Jenkins and Trevor Williams look ahead during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Philip Rivers throws during the first half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif.

Darius Philon and Melvin Ingram sack Oakland Raiders quarterback Derek Carr during the first half of an NFL football game, Sunday, Dec. 31, 2017, in Carson, Calif. 

Kyle Emanuel defends against Oakland Raiders running back Marshawn Lynch during the first half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Alex Gallardo)

Melvin Gordon gains yardage during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Jahleel Addae celebrates a tackle during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Keenan Allen scores a touchdown after recovering Melvin Gordon's fumble during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Darius Philon celebrates his sack during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Oakland Raiders wide receiver Amari Cooper can't make the catch as Casey Hayward defends during the first half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Alex Gallardo)

Travis Benjamin celebrates with Keenan Allen after scoring a touchdown during the second half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif.

Antonio Gates make a 20-yard catch during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Tre Boston makes an interception during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Keenan Allen smiles after scoring a touchdown during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Branden Oliver gains yardage during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. 

Philip Rivers celebrates with wide receiver Keenan Allen after a touchdown during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Kelvin Kuo)

Tre Boston celebrates with teammates after intercepting a pass during the first half of an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. (AP Photo/Alex Gallardo)

Desmond King celebrates a strong defensive play against the Oakland Raiders during the second half of an NFL football game Sunday, Dec. 31, 2017, in Carson, Calif.