Heading into his senior year, Blake was named to the watch lists for both the Lombardi and Lott awards once again. [1] He rose into the top five on some early 2008 NFL Draft boards and drew wide comparisons to Dwight Freeney for his burst off the ball and his straight-line speed. Dave Campbell's Texas Football featured Blake on its 2007 cover alongside Texas A&M quarterback Stephen McGee and Texas quarterback Colt McCoy.
After extended speculation during the 2007 NCAA Division I FBS football season, Blake's agent Reggie Rouzan revealed in February 2008 that Blake was being treated for depression and social anxiety disorder, which privacy laws had prohibited TCU from disclosing publicly. The daily presence of scouts was reported as what drove Blake off that practice field, but Blake believes what he estimates to be around 300 daily calls from prospective scouts brought about his mental illness.
Instead of attending the NFL Scouting Combine, Blake underwent several psychological tests in a nearby Indianapolis hospital on February 24, 2008. He took his first metaphorical step toward rebuilding his NFL draft stock at TCU's pro day Thursday March 6, 2008, when he showed up weighing 272 pounds and ran a hand-held time of 4.75 in the 40-yard dash, the same time run by top defensive end prospect Chris Long of the University of Virginia. He also had 23 reps in the 225-pound bench press, better than the University of Miami's Calais Campbell's 16 reps or Clemson's Phillip Merling's 17, and logged a 30½-inch vertical jump and a broad jump of 9 ft, 3 in. He was not drafted in the 2008 NFL draft and attended the Tampa Bay Buccaneers' minicamp as a free agent.