Buster, to me, is just a slam-dunk Hall of Famer," Wood said. It's not even really a question. Though Posey won three World Series titles with the Giants and collected a lot of fancy hardware, including MVP and Rookie of the Year trophies, retiring at the age of 34 might be an issue for some voters, even with Posey's strong 2021 season closing his career on a high note.