Justin Smith of San Francisco 49ers will announce retirement - ESPN
Pro Football Journal: Justin Smith—Recently Retired Already Forgotten?
Justin Smith Announces Retirement from NFL
Justin Smith Announces Retirement from NFL
Justin Smith Announces Retirement from NFL
Justin Smith Announces Retirement from NFL
Monday's NFL roundup: 49ers' Smith retires
Justin Smith Announces Retirement from NFL
49ers' Justin Smith calls it quits after stellar 14-year career
Pro Football Journal: Justin Smith—Recently Retired Already Forgotten?
Justin Smith retires: 49ers defensive lineman announces retirement - Sports Illustrated
Justin Smith Announces Retirement from NFL