Buster Posey opts out of 2020 MLB season - McCovey Chronicles
2023 MLB season: Final-week playoff races, MVP battle, more - ESPN
Citing the Pain of a Demanding Job, Buster Posey Retires at 34 - The New York Times
Giants' Buster Posey, with health concerns over adopted twins, will opt out of 2020 season
Phillies prospect Logan O'Hoppe has always been a catcher and that won't change
Buster Posey opts out of 2020 MLB season - McCovey Chronicles
Giants' Buster Posey Won't Play in 2020 MLB Season Due to Twin Newborns' Health amid Coronavirus
Trey Mancini, Buster Posey win 2021 MLB Comeback Players of the Year
Former Mariners ace Felix Hernandez decides not to play in 2020
Giants' Buster Posey latest MLB star to opt out of 2020 season - Athletics Nation
Top 15 Giants and A's people to watch: From Buster Posey to Billy Owens to Marco Luciano