Buster Posey opts out of playing for San Francisco Giants in

San Francisco Giants' Buster Posey opts out of 2020 season

Giants' Buster Posey Won't Play in 2020 MLB Season Due to Twin

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Buster Posey misses third workout at Giants camp - NBC Sports

Retired Giants catcher Buster Posey goes back to school to

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SF Giants' Buster Posey set to announce retirement on Thursday

Giants star Buster Posey sitting out the 2020 season – Santa Cruz

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