49ers' Joe Staley reveals details of injuries that led to retirement
San Francisco 49ers LT Joe Staley Expected to Retire - Sports
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Garrett Celek announces retirement, leaving Joe Staley as last
49ers All-Pro tackle Joe Staley announces retirement - Martinez
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Longtime San Francisco 49ers OT Joe Staley retires after 13
49ers veteran Joe Staley retires after 13 seasons in the NFL
Joe Staley, All-Decade OT, Officially Announces Retirement From
Former 49ers tackle Joe Staley reflects on retirement decision
San Francisco 49ers veteran Joe Staley announces retirement after