Nebraska pass rusher Randy Gregory acknowledged that he failed a drug test for marijuana at the NFL scouting combine in February.
"I blame myself," Gregory told NFL Network. "And I know it sounds cliché, but there's really no one else I can blame."
Gregory met with the Ravens informally at the combine and is scheduled to visit them before the draft, according to league sources. It's unclear whether this revelation about drug use will cause Gregory's draft stock to fall. The Ravens have the 26th overall pick of the first round.
Gregory informed teams that he smoked marijuana, including two positive tests at Nebraska. He told NFL Network that he hasn't smoked marijuana since December, but he had high enough levels of the drug in his system that it triggered a positive test. Gregory said he hasn't used any other illegal drugs.
"I was worse at Nebraska than I've ever been at any other time of my life," Gregory said. "But I know how I am now. I think if teams really look at how I am now more so than the past, they'll see I'm making strides to get better as a person and as a player. ...
"Obviously, this is new news that I failed the test at the combine, but the fact that I've smoked in the past isn't a mystery. I've had conversations with [NFL] coaches. I believe we all have an understanding of why I did it. But I feel like I'm improving. I know I am."
Gregory is 6 feet 5, 243 pounds and likely projects as a 3-4 outside linebacker in the NFL. He ran the 40-yard dash in 4.64 seconds at the combine and bench-pressed 225 pounds 24 times. He had a 36.5-inch vertical leap and a 10-5 broad jump.
At a private workout this week, Gregory ran the 40-yard dash in 4.53 seconds.
At his campus Pro Day workout, Gregory had times of 4.30 in the short shuttle, 6.73 in the three-cone drill and 11.64 in the 60-yard shuttle.
"For me, even at 235 pounds, I still think I set the edge pretty well just because of my technique," Gregory said during the NFL scouting combine. "And I think I use my strength well for how much I weigh. I'll only get stronger."
Gregory was an All-Big Ten Conference selection with the Cornhuskers.
Last season, Gregory dealt with injuries and still had 50 tackles, 10 for losses, seven sacks and two blocked kicks. He missed two games with a knee injury and parts of two others.
Gregory recorded 66 tackles, 19 for losses, and 10.5 sacks after transferring from Arizona Western Junior College in 2013.
"This incident right now is a step toward ending my career," Gregory said. "The last thing I want to do is fail another drug test and be out of the league.
"I want it on the record. I want people to understand I know I messed up. I'm owning up to it. I realize it. But at the same time, I'm taking the right steps to get better and to fix it."