Career
He played college football at Troy University. He was signed by the Chicago Bears as an undrafted free agent in 2011. Chicago Bears
Addison was signed on July 26, 2011 by the Chicago Bears as an undrafted free agent.
He was cut by the Bears on November 21, 2011 to free up space on the 53-man roster for veteran players to cover the injuries picked up by long snapper Patrick Mannelly and quarterback Jay Cutler in the previous day"s 31-20 victory over the San Diego Chargers.
He had only played in two games. Indianapolis Colts
He was claimed off waivers by Indianapolis Colts on November 22, though the Tampa Bay Buccaneers had also placed in a claim for Addison.
On October 1, 2012, Addison was waived by the Colts, but added to the practice squad the next day. Washington Redskins
Addison was signed off the Colts" practice squad by the Washington Redskins on October 9, 2012.
After playing five games with the Redskins, he was waived on November 29.
He was signed to the practice squad the next day. Carolina Panthers
Addison was signed on December 4, 2012 by the Carolina Panthers from the Redskin"s practice squad. On June 18, 2014, he signed a two-year contract extension.
Through the first five games of the season, Addison led the Panthers with 5 sacks and pass rush productivity.