Three-time champ Buster Posey becomes first former player to join San Francisco Giants ownership group - ESPN
Buster Posey - The Most Important San Francisco Giants Roster Addition
Why Giants catcher Buster Posey is better now than before – East Bay Times
San Francisco Giants: 2021 Regular Season Review – Bat Flips and Nerds
Giants' Buster Posey 'doing fine' after hit in head by pitch
3 San Francisco Giants players join Buster Posey on 2015 National League All-Star Team roster - ABC7 San Francisco
Buster Posey's effectiveness a pressing matter for Giants
Giants scratch Buster Posey because of neck stiffness – East Bay Times
Giants' future at catcher after Buster Posey's retirement
Giants Roster Breakdown: Despite success, outfield needs one more bat – NBC Sports Bay Area & California
SF Giants: Buster Posey opts out; Joey Bart may not be the answer