New York Yankees retired Paul O'Neill's No. 21 jersey
Yankees to retire Paul O'Neill's No. 21 on Aug. 21
Predicting the Next Retired Number for Every Team - The Crawfish Boxes
The Yankees need to reissue Paul O`Neill's no. 21 - Pinstripe Alley
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water
New York Yankees - Wikipedia
Retired number new feature? : r/OOTP
The Yankees' unlucky number: Retire '13' so we can forget the sad
Paul O'Neill's No. 21 to Be Retired By Yankees – NBC New York