Yankees retire Posada's No. 20

Paul O'Neill Yankees No. 21 retired

Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday

The Worst Players to Wear Each of the 21 Retired Yankees Numbers - Sports Pickle

Derek Jeter's No. 2 retired: See all New York Yankees retired numbers

Yankees legend Jorge Posada stars in new Hispanic Heritage Month feature - Pinstripe Alley

CCA Kids Blog: Yankees to Retire Jorge Posada's Number

Yankees also retiring numbers for Bernie Williams, Jorge Posada; Willie Randolph to be honored in Monument Park - NBC Sports

Jorge Posada has No. 20 retired by Yankees on 'one of the happiest days of my life' – New York Daily News

Retired New York Yankees Catcher Lists Home for Sale in the Old Cutler Bay Neighborhood for $20 Million

OPINION: Jorge Posada A Great Yankee, But Not A Hall Of Famer - SB Nation New York

Yankees Retired Numbers

Jorge Posada has No. 20 retired by Yankees on 'one of the happiest days of my life' – New York Daily News

Why Andy Pettitte deserves number retired, but Jorge Posada doesn't

Yankees retired numbers and the baseball legends who wore them

Where Derek Jeter ranks among Yankees' retired single-digit numbers

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