Giants catcher Buster Posey, former NL MVP, announces retirement
San Francisco Giants' Buster Posey announces retirement
Giants legend Buster Posey officially retires, cites family, other reasons
Buster Posey retires from baseball after 12 MLB seasons – NSS
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Citing the Pain of a Demanding Job, Buster Posey Retires at 34 - The New York Times
Buster Posey announces retirement
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