Yankees retire Posada's No. 20
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – KGET 17
Andy Pettitte joins Yankees' elite in Monument Park with plaque
New York Yankees: The Numbers on the Wall
MORE
Hip! Hip!: Ten Moments That Defined Jorge Posada's Career - WSJ
Monument Park (Yankee Stadium) - Wikipedia
Yankees Retire Jorge Posada's No. 20, With a Nod to No. 15 - The
Yankees also retiring numbers for Bernie Williams and Jorge Posada
Posada says there is no chance he returns to Yankees
Yankees also retiring numbers for Bernie Williams and Jorge Posada
Paul O'Neill talks jersey number retired by New York Yankees
Yankees retire Jorge Posada's No. 20
Yankees to retire Jeter's No. 2, the last single digit
CCA Kids Blog: Yankees to Retire Jorge Posada's Number
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them
Jorge Posada has No. 20 retired by Yankees on 'one of the happiest