San Francisco Giants' Buster Posey opts out of 2020 season
Giants' Buster Posey to announce retirement Thursday: Sources - The Athletic
Giants star catcher Buster Posey opts out of 2020 MLB season
San Francisco Giants catcher Buster Posey's expected retirement announcement shocks fans - ABC7 San Francisco
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Giants' superstar catcher Buster Posey to retire
Surprise retirements from MLB players
Giants catcher Buster Posey unsure if he'll opt out of 2020 season
Giants catcher Buster Posey will announce retirement - Los Angeles Times
SF Giants: Buster Posey opts out; Joey Bart may not be the answer
San Francisco Giants legend Buster Posey announces retirement - AmadorValleyToday