He is a 4-time World Series champion as a manager for the San Francisco Giants and Texas Rangers. They dominated the National League West during that time, and Buster Posey was a big part of it as a star catcher. “Buster Posey says he will talk to Bruce Bochy about role in the organization, but not as manager. He is 70 years old and has managed since 1995, but he had a four-year gap between the Giants and Rangers. Posey is going to build a winning team for the Giants, and having Brochy by his side will be a big help.