SF Giants News: Should we be concerned about Buster Posey? - McCovey Chronicles
Buster Posey: San Francisco Giants' 7-time All-Star catcher to retire
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Major League Baseball links - Buster Posey retires, Tigers add Barnhart - Red Reporter
Final Score: Buster Posey exits early in Giants' 6-3 loss to D-backs - McCovey Chronicles
Giants catcher Buster Posey to retire from MLB
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Buster Posey Joins San Francisco Giants Ownership Group - The New York Times
Buster Posey - San Francisco Chronicle
SF Giants News: Buster Posey joins Giants ownership group - McCovey Chronicles