Coronavirus: Giants All-Star catcher Buster Posey opts out of 2020
Giants' Buster Posey opts out of season after adopting twins: 'Not a difficult decision
Buster Posey, San Francisco Giants catcher, is retiring, per report - Lone Star Ball
Giants catcher Buster Posey will announce retirement - Los Angeles Times
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San Francisco Giants roster and schedule for 2020 season - NBC Sports
Orioles reset: Like Buster Posey before him, Adley Rutschman showing value of having a two-way catcher
SF Giants' Tyler Heineman tasked with bridging the gap from Buster Posey to Joey Bart – Daily Democrat
Big Stars Are Sitting Out the MLB Season. Other Players Have No Choice but to Play. - WSJ
Giants' Buster Posey will announce retirement Thursday: report
Tracking MLB Opt-Outs - NBC Sports
Could Buster Posey's resurgence change the way baseball handles star catchers?
Giants' Buster Posey, with health concerns over adopted twins, will opt out of 2020 season