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

Yankees to retire Paul O'Neill's No. 21 on Aug. 21

New York Yankees to retire Paul O'Neill's jersey number during 2022 season - Sports Illustrated NY Yankees News, Analysis and More

Mark Reynolds becomes Yankees' latest No. 39 - Newsday

Derek Jeter, Out of Pinstripes and in Monument Park, Can Finally Reflect - The New York Times

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

Yankees fall to Cardinals as Clay Holmes gives up two-out, two-run double in eighth - Newsday

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

Monument Park (Yankee Stadium) - Wikipedia

Paul O'Neill returning to YES Network broadcast booth for Yankees games

Yankees to retire Paul O'Neill's No. 21 on Aug. 21