Gaddis has also been a member of the Cleveland Browns, Indianapolis Colts, and New York Sentinels.
As a senior in 2006, Gaddis served as team captain, earned first-team All-Atlantic 10 accolades and started all 11 games at center.
2007 Season Signed with the Buffalo Bills practice squad as an undrafted rookie free agent on May 3, 2007.
2008 Season Gaddis started all four preseason games for the Buffalo Bills before being released on Aust 30,2008.
Gaddis shadowed at Travers Collins in March 2010, which led to an offseason internship with the New Era Cap Company.