Every Yankees Retired Number
Yankees retire Mariano Rivera's number
Yankees to retire Paul O'Neill's No. 21: See the complete list of retired numbers
Yankee Stadium: Monument Park - Retired Numbers - Reggie J…
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A number of nuggets about retired numbers around the Major League
Yankees Retired Numbers
Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx
Yankees retired numbers
Here are the Yankees' 21 retired numbers Who belongs and who doesn't? Andy Pettitte, Jorge Posada, Bernie Williams, more
Retired Uniform Numbers in the American League
New York Yankees to retire Paul O'Neill's No. 21 on Aug. 21 - The San Diego Union-Tribune