Houston, who announced his decision Saturday, joins receiver A.J. Green as Georgia juniors to apply to the draft.
Houston was third on the team with 67 tackles. He had 20 sacks for his career, seventh-best in school history.
Saturday was the deadline for underclassmen to enter the draft.
Houston says his decision was "very hard" and he "had to do what's best for me and my family."
Copyright 2011 by The Associated Press