AP Source: Giants C Buster Posey will announce retirement
SF Giants' Buster Posey leaves an unrivaled legacy and a void that can't be filled – Daily Democrat
Giants' Buster Posey revitalized by 2020 opt-out
AP: Giants Catcher Buster Posey Will Announce Retirement, Sports
Posey Made Decision To Bring Him Back Easy For The Giants –
What Buster Posey's absence will mean for the Giants (and is Joey Bart ready?) – Monterey Herald
Buster Posey retires after 12 seasons with Giants, '12 slam vs. Reds
Buster Posey skipping MLB season for his babies is a huge sacrifice
Buster Posey skipping MLB season for his babies is a huge sacrifice