Gregory said he first smoked marijuana after graduating from Hamilton Southeastern High School in Fishers, Ind., and before enrolling at Arizona Western Community College in 2011. He had failed to qualify academically at Purdue, which represented a considerable disappointment to him, and Gregory said he turned to marijuana to cope with the anxiety.
He sat out the 2012 season with a broken leg but was still pursued by major colleges. In 2013 he transferred to Nebraska, where he officially tested positive for marijuana twice, in January 2014 and April 2014. (Gregory said Nebraska officials told him he would be kicked off the team if he were to fail a third test.)
Gregory said he has not smoked marijuana since December, but because his THC levels were so elevated, the drug remained in his system at the combine. Thus, the positive test.
"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."