Giants' Buster Posey explains why he chose to retire from MLB

Buster Posey announces retirement

Retired Giants catcher Buster Posey goes back to school to complete his degree from Florida State

Buster Posey announces retirement

Buster Posey Retires — Is He a Hall of Famer? – The Fordham Ram

Surprise retirements from MLB players

Buster Posey - San Francisco Chronicle

Buster Posey announces retirement

Giants' Buster Posey is unexpectedly retiring, according to reports

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