Five-time Pro Bowl wide receiver Amari Cooper, 31, unexpectedly retired Thursday, just over a week after signing a one-year contract with the Las Vegas Raiders. Cooper, who had a successful 10-season NFL career with four teams, informed Raiders coach Pete Carroll of his decision. Despite recent statements expressing his desire to prove his worth, Cooper's retirement leaves the Raiders' offensive plans uncertain for their upcoming season opener. He amassed 711 catches, 10,033 yards, and 64 touchdowns throughout his career.

Prepared by Emily Rhodes and reviewed by editorial team.