Andy Pettitte ends Yankees career in fitting fashion
Yankees: Core four propel Bombers
New York Yankees Core Four 4 Derek Jeter Baseball Illustrated
This piece features individually autographed Baseball Cards of New York Yankees Core Four - Derek Jeter , Mariano Rivera , Andy Pettitte & Jorge
Derek Jeter , Andy Pettitte , Jorge Posada And Mariano Rivera Autographed New York Yankees (Core Four) Deluxe Framed Baseball Card Piece - JSA
Core Four - Wikipedia
Jorge Posada, Andy Pettitte, Derek Jeter and Mariano Rivera
New York Yankees LE Core Four Official 1998 World Series
Core Four reunite in Derek Jeter's last home opener - ESPN
Mariano Rivera – Society for American Baseball Research