Overview

• Cooper, 31, informed the Raiders on Thursday that he is retiring, a move first reported by NFL Network and confirmed by team coaches to the Associated Press.
• He had signed a one-year deal with Las Vegas late last month and exits before the Week 1 opener at New England.
• The 10-year veteran finishes with 711 receptions, 10,033 yards and 64 touchdowns, with seven 1,000-yard seasons and five Pro Bowl selections.
• Reporting from NFL Network indicated he struggled in the ramp-up process, a week after he told reporters he still had "some juice left."
• With receiver depth thinned, the Raiders signed Justin Shorter from the practice squad, adding to a group that includes Jakobi Meyers, Tre Tucker, Dont'e Thornton and Jack Bech.