According to multiple reports, including this one by Fox's Jay Glazer and Alex Marvez, USC tight end Anthony McCoy and Georgia Tech running back Jonathan Dwyer each failed drug tests administered at the Combine.
Dwyer was found to have amphetamines in his system, something that may not have a negative impact on his draft stock due to the fact that many teams knew about his prescription for a pre-existing condition. Furthermore, he has not had any previous off-field problems at Georgia Tech.
The news is much darker, however, for McCoy, who tested positive for marijuana.
McCoy is considered one of the better all-around tight ends in the 2010 class. While he lacks the speed associated with today's hybrid receiving specialists, he's proven to be an effective short to intermediate yardage target and is perhaps this year's best blocker at the position.
McCoy, however, has struggled with discipline throughout his career at USC. He was suspended due to academic violations on multiple occasions, including twice his senior year. McCoy was suspended from the team before the season began and then again for the Emerald Bowl, what would have been his final game in a USC uniform.
On their own, McCoy's academic struggles wouldn't be enough to do more than raise a red flag for most teams. The failed drug test, however, when put in the context of his other issues, will certainly be enough to take him off many teams' boards... enough in fact that some scouts feel he could slip out of the draft entirely.