Yankees Core Four
Tom Verducci: More from the Core Four: Jeter, Mo, Posada and Pettitte do lunch - Sports Illustrated
Core Four reunited before Yankees home opener
Core Four reunites to honor Yankees captain Derek Jeter – New York Daily News
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Core Four - Wikipedia
New York Yankees Core Four Replica Ring Set - CharityStars
Yankees' legendary Core Four of Derek Jeter, Mariano Rivera, Jorge Posada and Andy Pettitte watches back-to-back home runs from rookies Tyler Austin and Aaron Judge - ESPN
Core 4 saying goodbye to the old Yankee Stadium
The 'underrated heroes' who discovered the Yankees' Core Four
Mets Deteriorate While Four Core Yankees Sustain Themselves - The New York Times
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