Number 21 Continues to Remain Sacred to the New York Yankees

Yankees catcher Jose Trevino to undergo season-ending wrist surgery, National Sports

Yankees pitcher Domingo Germán throws 1st perfect game since 2012. It's the 24th in MLB history

New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN

The Athletic] The Yankees have asked MLB if they can stop issuing uniform numbers to their manager and coaches because they're running out of numbers that aren't retired : r/baseball

Dom Amore: Bobby Valentine remembers baseball's lost legends, helps launch Jackie Robinson scholarship at Sacred Heart – Hartford Courant

Yankees Rivals: Wild Card teams take losses, allowing Blue Jays to gain - Pinstripe Alley

Paul O'Neill Number Retirement before Yankees vs. Blue Jays on Sunday, August 21, 2022

Yankees retire Paul O'Neill's No. 21 jersey - NBC Sports

Luis Severino dominates again, Aaron Judge and Gleyber Torres hit back-to-back homers in Yankees' win over Tigers, National Sports

As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times

The Yankees need to reissue Paul O`Neill's no. 21 - Pinstripe Alley

Mets and Yankees wrap up nightmare New York seasons and head into uncertain winter

Mariano Rivera - Wikipedia

Paul O'Neill's No. 21 to be retired by Yankees