Giants' Buster Posey arrives in camp but says he still might opt out
Buster Posey ready to move on from baseball, says farewell – The Denver Post
Buster Posey's greatest MLB moments
Giants' Buster Posey latest MLB star to opt out of 2020 season - Athletics Nation
With Buster Posey sitting out, who is the face of 2020 SF Giants? – Daily Democrat
Giants catcher Buster Posey, former NL MVP, announces retirement
Buster Posey opts out of 2020 MLB season: Giants star catcher concerned about health of adopted twin baby girls
SF Giants: With Buster Posey retired, is it Joey Bart's time for an extended look? – Daily Democrat
Thank you SF Giants for a fun, wild, surprising 2020 season
Giants star Buster Posey sitting out the 2020 season – Santa Cruz Sentinel
LIVE: Buster Posey announces retirement at Oracle Park
San Francisco Giants' Buster Posey opts out of 2020 season
Buster Posey sets record with Giants, catches 1,000th game