Steven Jackson of the St. Louis Rams runs for some of his 125 yards against the Washington Redskins at the Edwards Jones Dome in St. Louis, Missouri on August 27, 2004. The Rams won 28-3.

Running back Steven Jackson (39) of the St. Louis Rams gains some yardage in the open field against the Miami Dolphins at Pro Player Stadium on October 24, 2004 in Miami, Florida. The Dolphins defeated the Rams 31-14.

St. Louis Rams Steven Jackson is congratulated by teammates after scoring a touchdown during an NFL football game against the New York Jets on January 2, 2005 at the Edward Jones Dome in St. Louis, Missouri. The Rams won 32-29 in overtime.

Running back Steven Jackson (39) of the St. Louis Rams dives for yardage and rushes for 97 yards and 2 touchdowns while trying to avoid a tackle by safety Steve Gleason (37) of the New Orleans Saints at the Edward Jones Dome on October 23, 2005 in St. Louis, Missouri. The Rams defeated the Saints 28-17.

Arizona Cardinals' Bertrand Berry, left, and Gerald Hayes, bottom right, try to stop St. Louis Rams' Steven Jackson, center, during the second quarter of an NFL football game in Glendale, Ariz., Sunday, Sept. 24, 2006.

St. Louis Rams against the Seattle Seahawks during a NFL football game on Oct. 15, 2006 in St. Louis. The Seahawks won 30-28.

St. Louis Rams' Steven Jackson (39) celebrates his second quarter touchdown with teammate Torry Holt against the Seattle Seahawks In an NFL football game Sunday, Oct. 15, 2006.

St. Louis Rams' Steven Jackson reacts after scoring against the Seattle Seahawks in the fourth quarter of their NFL football game Sunday, Nov. 12, 2006, in Seattle. The Seahawks defeated the Rams, 24-22.

St. Louis Rams' Steven Jackson (39) jumps over San Francisco 49ers' Mike Adams in the fourth quarter in an NFL football game Sunday, Nov. 26, 2006 in St. Louis. The Rams won 20-17.

St. Louis Rams running back Steven Jackson, high-steps into the end zone on a 19-yard touchdown-run in the fourth quarter of a NFL football game in Oakland, Calif., Sunday, Dec. 17, 2006. St. Louis won, 20-0.

Running back Steven Jackson (39) of the St. Louis Rams puts his helmet on for a short period of time during a preseason game against the Oakland Raiders on August 24, 2007 at McAfee Coliseum in Oakland, California. The Raiders defeated the Rams 20-10.

Steven Jackson (39) of the St. Louis Rams dives into the end zone during 1st-half action against the Cleveland Browns at the Edward Jones Dome on October 28, 2007 in St. Louis, Missouri.

Steven Jackson #39 of St. Louis Rams runs for yardage against the Green Bay Packers on December 16, 2007 in St. Louis, Missouri.

St. Louis Rams running back Steven Jackson, top, runs for yardage before being stopped by Pittsburgh Steelers cornerback Ike Taylor, bottom, during the first quarter of an NFL football game Thursday, Dec. 20, 2007, in St. Louis.

Running back Steven Jackson (39) of the St. Louis Rams runs with the football against the Pittsburgh Steelers at Edwards Jones Dome on December 20, 2007 in St. Louis, Missouri. The Steelers defeated the Rams 41-24.

St. Louis Rams running back Steven Jackson, left, scores on a 29-yard touchdown run as Buffalo Bills' Ko Simpson, right, gives chase during the second quarter of an NFL football game, Sunday, Sept. 28, 2008, in St. Louis.

St. Louis Rams running back Steven Jackson (39) runs for an 8-yard gain as the Buffalo Bills' Ko Simpson misses the tackle during the second quarter of an NFL football game, Sunday, Sept. 28, 2008, in St. Louis.

Steven Jackson (39) of the St. Louis Rams reacts after an official called a person foul during a game against the Washington Redskins at FedEx Field on October 12, 2008 in Landover, Maryland. St. Louis won 19-17.

Steven Jackson (39) of the St. Louis Rams reacts after an official called a person foul during a game against the Washington Redskins at FedEx Field on October 12, 2008 in Landover, Maryland. St. Louis won 19-17.

St. Louis Rams running back Steven Jackson (39) reacts after scoring a touchdown against the Atlanta Falcons during their NFL game at the Georgia Dome in Atlanta Sunday, Dec. 28, 2008.

St. Louis Rams running back Steven Jackson (39) scores a touchdown against the Atlanta Falcons during their NFL game at the Georgia Dome in Atlanta Sunday, Dec. 28, 2008.

St. Louis Rams running back Steven Jackson (39) runs with the ball during the second quarter of an NFL football game against the Green Bay Packers Sunday, Sept. 27, 2009, in St. Louis.

St. Louis Rams running back Steven Jackson rushes for a 25-yard touchdown against the Detroit Lions in the fourth quarter of an NFL football game in Detroit, Sunday, Nov. 1, 2009. St. Louis won 17-10.

Steven Jackson (39) of the St. Louis Rams runs for yardage against the New Orleans Saints at the Edward Jones Dome on November 15, 2009 in St. Louis, Missouri. The Saints won 28-23.

Steven Jackson (39) of the St. Louis Rams runs for yardage against the San Francisco 49ers at the Edward Jones Dome on January 3, 2010 in St. Louis, Missouri. The 49ers defeated the Rams 28-6.

St. Louis Rams running back Steven Jackson drags Washington Redskins safety LaRon Landry into the end zone as he scores a touchdown during the first quarter of an NFL football game Sunday, Sept. 26, 2010, in St. Louis.

St. Louis Rams running back Steven Jackson (39) before the start of an NFL football game between the St. Louis Rams and the Seattle Seahawks Sunday, Oct. 3, 2010, in St. Louis.

St. Louis Rams running back Steven Jackson (39) celebrates his touchdown as teammate Laurent Robinson (19) and Brandon Gibson (11) pursue during the third quarter of an NFL football game against the Arizona Cardinals, Sunday, Dec. 5, 2010, in Glendale, Ariz. The Rams won 19-6.

St. Louis Rams running back Steven Jackson (39) in the second half of an NFL football game at the Louisiana Superdome in New Orleans, Sunday, Dec. 12, 2010.

St. Louis Rams running back Steven Jackson walks off the field following an NFL preseason football game against the Indianapolis Colts Saturday, Aug. 13, 2011 in St. Louis. The Rams won 33-10.

Steven Jackson (39) of the St. Louis Rams huddles up the team against the Tennessee Titans during an NFL Football game on August 20, 2011 at the Edward Jones Dome in St. Louis, Missouri. The Rams defeated the Titans 17-16.

St. Louis Rams running back Steven Jackson is seen before the start of an NFL football game against the Tennessee Titans Saturday, Aug. 20, 2011, in St. Louis.

St. Louis Rams Steven Jackson poses for portraits on location in St. Louis, MO, on September 5, 2011.

St .Louis Rams Steven Jackson poses for portraits on location in St. Louis MO, on September 5, 2011.

St. Louis Rams running back Steven Jackson dives across the end zone for a touchdown against the Seattle Seahawks in the second half of an NFL football game, Monday, Dec. 12, 2011, in Seattle. The Seahawks won 30-13.

St. Louis Rams running back Steven Jackson (39) runs the ball in the first quarter of the NFL football game against the Pittsburgh Steelers on Saturday, Dec. 24, 2011 in Pittsburgh.

Atlanta Falcons running back Steven Jackson takes the field during introductions against the Cincinnati Bengals at the Georgia Dome in Atlanta, Thursday August 8, 2013.

Atlanta Falcons running back Steven Jackson (39) runs 8 yards to score a touchdown as St. Louis Rams linebacker Alec Ogletree (52) tackles during the NFL regular season week 2 football game on Sunday, Sept 15, 2013 in Atlanta. The Falcons won the game 31-24.

Atlanta Falcons' Steven Jackson high-fives students at Shiloh Point Elementary School as part of the NFL's Play 60 Campaign to encourage kids to get 60 minutes of exercise a day, Tuesday, Dec. 3, 2013, in Cumming, Ga. Jackson addressed a special assembly of students on the importance of staying active and eating healthy before leading them in a fitness class. The school also received a grant for $10,000 for health and wellness programming and equipment.

Atlanta Falcons running back Steven Jackson (39) scores on a 2-yard run during an NFL football game against the San Francisco 49ers on Monday, Dec. 23, 2013, in San Francisco. The 49ers won the game, 34-24.

Atlanta Falcons running back Steven Jackson (39) celebrates with Levine Toilolo (80) after scoring a touchdown against the New York Giants during the first half of an NFL football game, Sunday, Oct. 5, 2014, in East Rutherford, N.J.

Atlanta Falcons running back Steven Jackson (39) carries the ball against Detroit Lions cornerback Rashean Mathis (31) in the first half of the NFL football game at Wembley Stadium, London, Sunday, Oct. 26, 2014.

Atlanta Falcons running back Steven Jackson (39) eludes Tampa Bay Buccaneers free safety Bradley McDougald (30) for a touchdown run as Matt Ryan (2) watches during the first half of an NFL football game in Tampa, Fla., Sunday, Nov. 9, 2014.

Atlanta Falcons running back Steven Jackson (39) takes the field before the first half of an NFL football game against the Pittsburgh Steelers, Sunday, Dec. 14, 2014, in Atlanta.

New England Patriots running back Steven Jackson (39) reaches out to score a touchdown on a one-yard run during the first half the NFL football AFC Championship game between the Denver Broncos and the New England Patriots, Sunday, Jan. 24, 2016, in Denver.

New England Patriots running back Steven Jackson (39) hurdles defenders in the divisional playoff game against the Kansas City Chiefs during the, Saturday, January 16, 2016, Foxboro, MA. The Patriots defeated the Chiefs 27-20.