Yankees to retire Paul O'Neill's No. 21: See the complete list of retired numbers
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed
Paul O'Neill's No. 21 to be retired by Yankees
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
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Paul O'Neill's No. 21 to be retired by Yankees
Opposing fans need to shut up about Yankees retiring Paul O'Neill's number
New York Yankees history: Paul O'Neill's number 21 must be retired