Giants' Buster Posey opting out of 2020 MLB season
Giants' Posey Is the Champions' Champion - The New York Times
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Buster Posey officially opts out of the 2020 MLB season
Posey and Feliz Go From World Series to Rookie Honors - The New York Times
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Why Buster Posey's retirement didn't surprise ex-Giants star Will Clark – NBC Sports Bay Area & California