Defensive end Randy Gregory said he tested positive for marijuana at the NFL scouting combine last month and that he failed two drug tests at Nebraska last year. Gregory disclosed his marijuana use in an interview with NFL Media on Wednesday. Gregory went into February's scouting combine projected to be among the top 10 picks in the draft. He declared for the draft after his junior season at Nebraska, where he recorded 17 1/2 sacks in two seasons. More...