Serious Core Four Mo Mariano Rivera Derek Jeter Andy Petitte
World Series champs win home opener
What went into Mariano Rivera's perfect ending: 'Well, go ahead
Andy Pettitte is Drawn Back Into a Brotherhood - The New York Times
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Derek Jeter, Mariano Rivera, Jorge Posada & Andy Pettitte - New York Yankees - The Core Four - The Heart of the Yankees' Dynasty - Sports Illustrated - May 3, 2010 - SI at 's Sports Collectibles Store
Catching Up with the Core
Core Four FANTASY FURNACE
Rivera throws perfect 4th in spring training debut - The San Diego Union-Tribune
Bleeding Yankee Blue: GREATNESS TODAY WITH THE CORE FOUR
Mariano Rivera Derek Jeter Jorge Posada Andy Pettit 8 by 10 signed pho – Awesome Artifacts
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
