Jorge Posada on the Yankees' Struggles, the Core Four, and

From Jorge Posada to Austin Romine: A look at the catchers for Mariano Rivera's 602 saves – New York Daily News

Predicting the New York Yankees' Next Core Four

Yankees reminded they are far from Core Four days as struggles continue – New York Daily News

Andy Pettitte, New York Yankees: Lefty Veteran to Retire - WSJ

Yankees Jorge Posada: Bernie Williams was key to success of Core Four - Sports Illustrated NY Yankees News, Analysis and More

Hip, Hip Jorge! Posada Set to Hang 'Em Up Tuesday at 11:00 a.m., News, Scores, Highlights, Stats, and Rumors

A Private Catching Lesson with Yankees Star and Core Four Member Jorge Posada in Miami (For a Boy or Girl 18 Years Old or Younger) - Charitybuzz

Never too old: Hideki Matsui hits long HR on Yankees' Old-Timers' Day

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

Jorge Posada, Mariano Rivera on Derek Jeter being last of Core Four