Running back Steven Jackson #39 of the St. Louis Rams points for his blockers on a running play against the Miami Dolphins at Pro Player Stadium on October 24, 2004 in Miami, Florida. The Dolphins defeated the Rams 31-14. (AP Photo/Paul Spinelli)

Running back Steven Jackson #39 of the St. Louis Rams gets some yardage on a sweep against the Miami Dolphins at Pro Player Stadium on October 24, 2004 in Miami, Florida. The Dolphins defeated the Rams 31-14. (AP Photo/Paul Spinelli)

Running back Steven Jackson #39 of the St. Louis Rams rushes for 97 yards and 2 touchdowns against the New Orleans Saints at the Edward Jones Dome on October 23, 2005 in St. Louis, Missouri. The Rams defeated the Saints 28-17. (AP Photo/Paul Spinelli)

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. (AP Photo/Bill Boyce)

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. (AP Photo/Marcio Jose Sanchez)

St. Louis Rams running back Steven Jackson (39) smiles after the Rams defeated the Oakland Raiders 20-0 after their NFL game, Sunday, Dec. 17, 2006 in Oakland, Calif. Jackson scored two touchdowns. (AP Photo/Paul Sakuma)

St. Louis Rams running back Steven Jackson (39) finds an opening during an NFL game against the San Francisco 49ers, Nov. 18, 2007 in San Francisco. (AP Photo/Greg Trott)

Atlanta Falcons running back Steven Jackson (39) raises his hand in the air as he celebrates a touchdown during a Week 14 NFL football game against the Green Bay Packers in Green Bay, Wisconsin on Monday, December 8, 2014. The Packers defeated the Falcons 43-37. (AP Photo/Scott Boehm)

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. (AP Photo/Brynn Anderson)

Atlanta Falcons running back Steven Jackson (39) eludes Tampa Bay Buccaneers free safety Bradley McDougald (30) to score on a 1-yard touchdown run during the first quarter of an NFL football game Sunday, Nov. 9, 2014, in Tampa, Fla. (AP Photo/Phelan Ebenhack)

Atlanta Falcons running back Steven Jackson (39) carries the ball during an NFL week 14 football game against the Green Bay Packers Sunday, December 8, 2013, in Green Bay, Wis. The Packers won 22-21. (AP Photo/David Stluka)

Atlanta Falcons running back Steven Jackson (39) runs against the Arizona Cardinals during the first half of an NFL football game, Sunday, Nov. 30, 2014, in Atlanta. (AP Photo/Brynn Anderson)

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. (AP Photo/G. Newman Lowrance)

This is a 2014 photo of Steven Jackson of the Atlanta Falcons NFL football team. This image reflects the Atlanta Falcons active roster as of Monday, June 16, 2014 when this image was taken. (AP Photo)