He was signed by the Minnesota Vikings as an undrafted free agent in 2009. He played college football at University of California, Los Los Angeles
Bell was signed by the Minnesota Vikings as an undrafted free agent on April 27, 2009. He was waived on August 16, 2009.
Bell was signed to the Chicago Bears" practice squad on September 16, 2009.
He was promoted from the practice squad to the active roster on November 20, 2009, to replace an injured Garrett Wolfe. His first NFL carry on November 22, 2009 was a 72-yard run against the Philadelphia Eagles on National Broadcasting Company Sunday Night Football.
This is a modern NFL record for longest first carry of a career. His first NFL touchdown was a 25-yard reception against the Seattle Seahawks on December 18, 2011.
In 2011, after an injury to Matt Forté and Marion Barber, Bell became the starting running back for the Week 16 and 17 games against the Green Bay Packers and Minnesota Vikings after beating out undrafted rookie Armando Allen.
Bell also played in the Bears loss against the Denver Broncos. Bell and backup quarterback Josh McCown both generated more than 400 yards in the Packers game. Bell would record 121 on 23 attempts, and caught 4 passes for 38 yards.
In 2012, Bell became an unrestricted free agent, and the Bears extended a qualifying offer to him, which he accepted on April 14, 2012.
The contract was worth one-year and $1.26 million. He was waived on August 23, 2012 when he refused to have his contract reduced to $700,000.
He was re-signed by the Bears on September 15, 2012 after starting running back Matt Forte went down with an injury. Bell was later waived on October 15.
New York Jets
Bell was signed by the New York Jets on November 13, 2012 following injuries to running backs Bilal Powell and Joe McKnight.
He was waived on December 11, 2012. Second stint with the Chicago Bears
On December 18, 2012, Bell was brought back by the Bears after Michael Bush was placed on injured reserve. Second stint with the New York Jets
On August 11, 2013, Bell was signed by the New York Jets after running back John Griffin was waived due to a broken legal
He was released on September 1, 2013.
Green Bay Packers
On December 2, 2013, Bell was signed by the Green Bay Packers. He was not re-signed at the end of the season, making him a free agent.
Bell participated in WWE Tough Enough"s season 6. Although he initially was part of the 13 official participants, he didn"t pass the medical evaluations and was eliminated from the contest.