Posey out for 2020 as MLB teams deal with churning rosters
Giants' Buster Posey latest MLB star to opt out of 2020 season - Athletics Nation
Tracking MLB Opt-Outs - NBC Sports
Report: San Francisco Giants catcher Buster Posey to announce retirement Thursday
MLB on FOX - San Francisco Giants catcher Buster Posey
Buster Posey passes Willie McCovey, Will Clark in SF Giants' history with latest All-Star nod – Daily Democrat
Giants' Buster Posey arrives in camp but says he still might opt out
Buster Posey is back behind plate after opting out in 2020 - The San Diego Union-Tribune
On this date, 2010: Giants rookie Buster Posey makes lasting impression in debut – Daily Democrat
Giants catcher Buster Posey placed on seven-day concussion disabled list – The Denver Post