Demps went unselected in the 2006 NFL Draft, however he was signed by the Detroit Lions as an undrafted free agent on May 8, 2006, after participating in the rookie mini-camp as a tryout player.
Demps failed to get picked in the 2006 NFL Draft, but he was signed by the Detroit Lions as an unselected free agent on May 8, 2006, after participating in their rookie training camp as a trial player.