Buster Posey retires from baseball after 12 MLB seasons – NSS
What Buster Posey's retirement means for the Giants
Bye-bye Buster: Analyzing a Giant's retirement
Buster Posey retirement: Giants catcher to announce he will retire
FSU to retire baseball star Buster Posey's jersey
Buster_Posey
AP Source: Giants C Buster Posey will announce retirement
Buster Posey Retires — Is He a Hall of Famer? – The Fordham Ram
Buster Posey - Bay Area Sports Hall of Fame
Buster Posey retires: Giants catcher's singular career, legacy