FILE In a Sept. 6, 2014, file photo then Nebraska defensive end Randy Gregory wears street clothes before an NCAA colleg
FILE In a Sept. 6, 2014, file photo then Nebraska defensive end Randy Gregory wears street clothes before an NCAA college football game against McNeese State in Lincoln, Neb. Randy Gregory says he’s tested positive for marijuana at the NFL scouting combine last month and that he failed two drug tests at Nebraska last year.…