Aaron Judge makes Yankees history with second 3-HR game of the season
Why are the New York Yankees retiring Paul O'Neill's number 21 on August 21, 2022? What is your unedited opinion about it? - Quora
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
What the Yankees' uniform number crunch could cost MLB's managers and coaches - The Athletic
List of Major League Baseball retired numbers - Wikipedia
Derek Jeter's No. 2 retired: See all New York Yankees retired numbers
What the Yankees' uniform number crunch could cost MLB's managers and coaches - The Athletic
Derek Jeter's No. 2, Last of Yankees' Single Digits, to Be Retired - The New York Times
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
New York Yankees: The Numbers on the Wall