AP Source: Giants C Buster Posey will announce retirement - Seattle Sports
Giants catcher Buster Posey will announce retirement - Los Angeles Times
Clayton Kershaw, Dodgers Congratulate Giants' Buster Posey On Retirement
AP Source: Giants C Buster Posey will announce retirement
Giants' Buster Posey revitalized by 2020 opt-out
Buster Posey Retires: What are his Hall of Fame Chances? - Cooperstown Cred
Giants Buster Posey to stay in the organization - McCovey Chronicles
Giants' Posey retires after 12 seasons
SF Giants' Buster Posey: What it was like covering a baseball icon