Mickens was promoted from the Buccaneers' practice squad Friday, Greg Auman of The Athletic reports.
Mickens was elevated from the practice squad ahead of Thursday's season opener against the Cowboys, and he played 21 snaps on special teams. The 27-year-old recorded three kick returns for 92 yards while returning two punts for 21 yards, and he should continue to serve mainly as a contributor on special teams.