Yankees retire Posada's No. 20
Yankees to retire Jeter's No. 2, the last single digit
Monument Park (Yankee Stadium) - Wikipedia
Jorge Posada - Wikipedia
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Yankees Retired Numbers
Paul O'Neill Yankees No. 21 retired
Yankees Will Retire Numbers for Jorge Posada, Bernie Williams, Andy Pettitte - WSJ
Yankees also retiring numbers for Bernie Williams and Jorge Posada
Hip! Hip!: Ten Moments That Defined Jorge Posada's Career - WSJ
Andy Pettitte, Jorge Posada, Bernie Williams to have numbers retired by Yankees
Yankees retire Jorge Posada's No. 20 in Monument Park
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