Hernandez made his announcement Wednesday, on the fourth anniversary of his father's death.
"I know he would be proud of not only me, but of my whole family, whose love and support are the only reasons I am where I am today," Hernandez said in a statement.
He is the second Florida underclassman to make the jump to the NFL, joining cornerback Joe Haden . Several more could join them, including defensive end Carlos Dunlap and offensive linemen Mike and Maurkice Pouncey .
CLEMSON: An offensive lineman at Clemson has decided to give up football because of a back injury suffered while lifting weights.
The school said that offensive lineman J.K. Jay will become a student coach for the Tigers and remain on scholarship.
Jay said doctors told him he'd be at high risk for serious injury if he chose to play again. Jay had two surgeries last fall trying to correct the problem.
Jay enrolled in January 2009 and came out of spring practice listed as a co-starter at right tackle. The back injury led him to take a redshirt year with the hope of returning next fall.
ARKANSAS: Steve Caldwell and Kris Cinkovich are joining the staff as assistant coaches.
Caldwell will coach the defensive ends and Cinkovich will work with wide receivers
MINNESOTA: Running back Kevin Whaley will transfer after being suspended from the program.
Coach Tim Brewster announced that Whaley requested a release from his scholarship and will be permitted to transfer. Whaley was suspended for violating team rules and policies following the team's loss in the Insight Bowl on New Year's Eve.