Less than three years after being one of the most prized free agents on the open market, Nnamdi Asomugha' NFL career is over. Asomugha formally announced his retirement Friday at the Oakland Raiders' headquarters, ending his 11-year career at the place he had his most success. "I'm just grateful to be back, grateful for everything to go full circle," Asomugha said. "For all of the achievements and awards, to be able to retire as a Raider ranks highest among all of those." Read more http://espn.go.com/nfl/story/_/id/10202652/nnamdi-asomugha-retires-11-seasons-nfl
