Georgia outside linebacker/defensive end Justin Houston and Iowa defensive lineman Christian Ballard failed drug tests at the scouting combine in Indianapolis in February, according to a report by FOXSports.com.
Houston is a converted defensive end who registered 10 sacks as a junior in a pass-rushing role created for him by the Bulldogs' defensive staff, and he jumped on the opportunity to leave Georgia after his junior season. He has been considered a late-first or second-round draft value and is the No. 44-rated player overall by NFLDraftScout.com.
Houston has been an intriguing prospect for 3-4 teams because he already has a season of experience rushing off the edge, compared to most converted defensive ends who need to make a completely new transition to the role in the NFL. However, he's also considered a one-trick pony who is more athlete than football player at this point and might lack the explosiveness to develop into an elite pass rusher in the NFL.
Ballard has been projected as a second-round pick and is the 59th-rated prospect by NFLDraftScout.com, including the 10th-rated player in a very deep defensive end class. He has experience inside and outside and plays with explosion and hustle. A tight end when he arrived at Iowa, Ballard is excellent in one-on-one drills but struggles to make impact plays once the whistle blows.
Neither player has any previous records involving marijuana, according to the FOXSports.com report. If the reports of a failed drug test are true, it could significantly impact both players, who were already entering the draft fighting the dreaded 'tweener label as excellent athletes who might lack an ideal position in the NFL.
--Derek Harper, NFLDraftScout.com Executive Editor