Indianapolis Colts quarterback Philip Rivers (17) calls out to teammates during the first half of an NFL wild-card playoff football game against the Buffalo Bills Saturday, Jan. 9, 2021, in Orchard Park, N.Y.

San Diego Chargers quarterback Philip Rivers runs through smoke in the tunnel onto the field before playing the Jacksonville Jaguars in their NFL football game Sunday, Sept. 19, 2010, in San Diego.

Indianapolis Colts quarterback Philip Rivers (17) stands while the National Anthem is performed during the NFL game against the Cincinnati Bengals, Sunday, Oct. 18, 2020, in Indianapolis. The Colts defeated the Bengals 31-27.

Los Angeles Chargers quarterback Philip Rivers (17) hands the ball off to running back Melvin Gordon (25) during an NFL football game against the Denver Broncos, Sunday, Oct. 6, 2019 in Arlington, Texas.

San Diego Chargers quarterback Philip Rivers (17) makes a move with the football against the Carolina Panthers during an NFL game, Sunday, Sept. 7, 2008 in San Diego. The Panthers defeated the Chargers by the final score of 26-24.

Los Angeles Chargers quarterback Philip Rivers (17) walks through laser beams to the field before an NFL football game against the Cincinnati Bengals, Sunday, Dec. 9, 2018 in Carson, Calif.

Los Angeles Chargers quarterback Philip Rivers celebrates as he walks off the field after an NFL wild card playoff football game against the Baltimore Ravens, Sunday, Jan. 6, 2019, in Baltimore. Los Angeles won 23-17.

San Diego Chargers quarterback Philip Rivers (17) before an NFL football game against the Kansas City Chiefs, Sunday, Jan. 1, 2017, in San Diego. The Chiefs defeated the Chargers, 37-27.

San Diego Chargers quarterback Philip Rivers (17) meets with teammates and Jacksonville Jaguars players on the field for a prayer after an NFL football game in Jacksonville, Fla., Sunday, Nov. 29, 2015. The Chargers won 31-25.

LaDainian Tomlinson #21, Jamal Williams #76, and Philip Rivers #17 of the San Diego Chargers and Brian Waters #54, Jarrad Page #44 and Jon McGraw #47 of the Kansas City Chiefs watch the coin toss at Arrowhead Stadium on December 14 in Kansas City, Missouri. The Chargers defeated the Chiefs 22-21.

In this Aug. 22, 2018, file photo, New Orleans Saints quarterback Drew Brees, left, and Los Angeles Chargers quarterback Philip Rivers share a light moment after a joint NFL football practice, in Costa Mesa, Calif. The history between Philip Rivers and Drew Brees has many of the ingredients for a major sports rivalry. Except these two veteran quarterbacks still genuinely like and respect each other 14 years after they were thrown together with the San Diego Chargers.

Los Angeles Chargers quarterback Philip Rivers (17) prior to an NFL football game against the Oakland Raiders, Sunday, Dec. 31, 2017, in Carson, Calif. The Chargers defeated the Raiders, 30-10.

San Diego Chargers quarterback Philip Rivers (17) celebrates with fans after San Diego defeated the Cincinnati Bengals, 27-10, in an NFL wild-card playoff football game Sunday, Jan. 5, 2014, in Cincinnati.

The scoreboard notes that San Diego Chargers quarterback Philip Rivers (17) has become the 3rd Chargers QB to throw four TD's in back-to-back games during the NFL week 11 football game against the Denver Broncos on Monday, November 22, 2010 in San Diego, California. The Chargers won the game 35-14.

San Diego Chargers quarterback Philip Rivers (17) rolls out to pass during an NFL AFC Divisional Playoff Game against the New England Patriots on Sunday, Jan. 14, 2007, in San Diego. The Patriots defeated the Chargers 24-21.

Los Angeles Chargers quarterback Philip Rivers speaks during a press conference following a training session at Allianz Park in London, Friday Oct. 19, 2018. The Los Angeles Chargers are preparing for an NFL football game against the Tennessee Titans at London's Wembley stadium on Sunday.

Philip Rivers #17 of the San Diego Chargers on the sidelines against Baltimore Ravens the at Qualcomm Stadium on September 20, 2009 in San Diego, California. The Ravens defeated the Chargers 31-26.

San Diego Chargers quarterback Philip Rivers (17) jogs a warm-up lap around the field before playing the Denver Broncos an NFL football game, Sunday, Nov. 18, 2012, in Denver.

San Diego Chargers quarterback Philip Rivers (17) and tackle King Dunlap (77) battle a Kansas City Chiefs defender for a fumble during an NFL game at Qualcomm Stadium on October 19, 2014. The Chiefs defeated the Chargers 23-20 in Week 7.

San Diego Chargers quarterback Philip Rivers prepares to throw a long pass during an NFL football game against the Denver Broncos Sunday, Jan. 2, 2011, in Denver.

San Diego Chargers quarterback Philip Rivers throws against the Pittsburgh Steelers during the first half of their NFL football game in San Diego, Sunday, Oct. 8, 2006.

Green Bay Packers QB Aaron Rodgers talks with San Diego Chargers QB Philip Rivers following an NFL game at Qualcomm Stadium in in San Diego, Calif., on Sunday, Nov. 6, 2011. The packers defeated the Chargers 45-38.

San Diego Chargers quarterback Philip Rivers, left, talks with Denver Broncos quarterback Tim Tebow, right, after an NFL football game Monday, Nov. 22, 2010 in San Diego.

San Diego Chargers quarterback Philip Rivers (17) warms up before an NFL game against the Oakland Raiders, Monday, Sept. 14, 2009 in Oakland. The Chargers won the game, 24-20.

San Diego Chargers quarterback Philip Rivers, left, shakes hands with Indianapolis Colts quarterback Peyton Manning, right, after an NFL AFC wild-card playoff game Saturday, Jan. 3, 2009, in San Diego. San Diego won 23-17 in overtime.

San Diego Chargers quarterback Philip Rivers (17) watches from the sidelines as his team plays against the Pittsburgh Steelers in the NFL football game in Pittsburgh, Sunday, Oct. 4, 2009. The Steelers won 38-28.

San Diego Chargers quarterback Philip Rivers speaks as former San Diego Chargers, from left, Charlie Joiner and Lance Alworth and Chargers president Dean Spanos listen during a news conference at Qualcomm Stadium on Monday, June 1, 2009, in San Diego. The Chargers gathered former players from the past five decades to mark the 50th season of the football team.

San Diego Chargers quarterback Philip Rivers signs autographs before an NFL preseason football game against the Dallas Cowboys Saturday, Aug. 21, 2010, in San Diego.

San Diego Chargers quarterback Philip Rivers looks at a play book during an NFL divisional playoff football game against the New York Jets, Sunday, Jan. 17, 2010 in San Diego.

San Diego Chargers quarterback Philip Rivers (17) passes during an NFL game against the Denver Broncos, Sunday, Sept. 14, 2008 in Denver.

Quarterback Philip Rivers #17 of the San Diego Chargers (left) talks to Head Coach Norv Turner before pregame warmups at the preseason game against the Dallas Cowboys at Qualcomm Stadium on August 9, 2008 in San Diego, California. The Chargers defeated the Cowboys 31-17.

San Diego Chargers Philip Rivers, 2nd right, speaks LaDainian Tomlinson, right, and Chris Chambers, left, during a training session in Bagshot, England, Thursday, Oct. 23, 2008. The San Diego Chargers will face the New Orleans Saints in an NFL football game at Wembley Stadium, London, Sunday, Oct. 26.

Quarterback Philip Rivers #17 of the San Diego Chargers watches on the sidelines against the Kansas City Chiefs on November 28, 2004 at Arrowhead Stadium in Kansas City, Missouri. The Chargers defeated the Chiefs 34-31.

San Diego Chargers quarterback Philip Rivers (17) leads the offense during an NFL game against the Baltimore Ravens, Nov. 25, 2007 in San Diego. San Diego won 32-14.

New Orleans Saints quarterback Drew Brees (9) and San Diego Chargers quarterback Philip Rivers (17) in an NFL preseason football game in the Louisiana Superdome in New Orleans, Friday, Aug. 27, 2010. The Saints defeated the Chargers 36-21.

San Diego Chargers quarterback Philip Rivers (17) yells to fans as he leaves the field after the Chargers defeated the Tennessee Titans 23-17 in overtime in an NFL football game in Nashville, Tenn., Sunday, Dec. 9, 2007. Rivers threw for 228 yards and two touchdowns.

San Diego Chargers quarterback Philip Rivers delivers a pass during the first quarter of a preseason NFL football game against the Green Bay Packers on Saturday, Aug. 12, 2006, in San Diego.

San Diego Chargers quarterback Philip Rivers reacts after throwing a 37-yard touchdown pass to receiver Vincent Jackson with 29 seconds remaining in the game against the Seattle Seahawks during the fourth quarter NFL football game action at Qwest Field in Seattle on Sunday, Dec. 24, 2006.

San Diego Chargers rookie quarterback Philip Rivers walks on to the field for the first time after ending a contract holdout before game against the Seattle Seahawks at Qualcomm Stadium in San Diego, Calif. on Friday, August 26, 2004.

San Diego Chargers quarterback Philip Rivers, left, holds up his Chargers jersey with coach Marty Schottenheimer at a news conference in San Diego, Sunday, April 25, 2004. The Chargers traded No.1 draft pick Eli Manning to the New York Giants for Rivers and future draft picks.