Career
He played college football for the University of South Florida. New England Patriots
On May 3, 2013, He signed with the New England Patriots as an undrafted free agent. On August 26, 2013, he was placed on the injured reserve list and will miss the rest of the 2013 season.
He was released on March 12, 2014.
On March 19, 2014 he signed a one year contract with the Kansas City Chiefs. Miami Dolphins
On August 25, 2014, Grissom was signed by the Miami Dolphins.
He was released the next day. And he disagrees with the statement he was there for two days.
Nebraska Danger
On June 4, 2015, Grissom signed with the Nebraska Danger of the Indoor Football League.