Allen played almost exclusively at cornerback as a sophomore in 2003 but moved to free safety to fill a gaping hole there one game into the 2004 season.
A third-team Associated Press All-American, he led the SEC in tackles with 118. He ranked third in Div. 1-A with 84 solo stops.
Allen had double-digit tackles against Alabama (15), South Carolina (15), Florida (14), Auburn (14), Louisiana Tech (10), Notre Dame (10) and Kentucky (10). He was tabbed Walter Camp National Defensive Player of the Week following the Bama game.
Allen recorded interceptions against Florida and Vanderbilt.