Buster Posey - Wikipedia
Buster Posey joins the San Francisco Giants' ownership group
San Francisco Giants' Buster Posey retires, citing family, physical toll of game - ESPN
Why Buster Posey's Giants retirement shouldn't be total surprise – NBC Sports Bay Area & California
Buster Posey ready to move on from baseball, says farewell
Buster Posey ready to move on from baseball, says farewell
Giants great Buster Posey retires - The Japan Times
Buster Posey says farewell, thanks to Giants fans: 'Very important for me
Giants beat Padres, win NL West title on season's final day