Jorge Posada on the Yankees' Struggles, the Core Four, and
The Cour Four: Yankee legends have roundtable lunch discussion - Sports Illustrated Vault
Jorge Posada delivered another blow as Joe Girardi, Yankees phase out Core Four member in stages – New York Daily News
Andy Pettitte's career leaves lasting mark - ESPN - Stats & Info- ESPN
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Yankee Pride: The Future of the Core Four, News, Scores, Highlights, Stats, and Rumors
But We Weren't Telling” - When MLB Great Derek Jeter Revealed a Spring Training Tradition With His Closest Friend Jorge Posada - EssentiallySports
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Yankees add member of legendary Core Four as advisor
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Catching Up with the Core
ANdy Pettitte, Mariano Rivera, Jorge Posada and Derek Jeter 5 time world series champions the core four New York Yankees shirt, hoodie, sweater, long sleeve and tank top
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Big Read: Have the New York Yankees found a new Core Four?
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