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Monument Park (Yankee Stadium) - Wikipedia
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Paul O'Neill Yankees No. 21 retired
![Yankees retired numbers: Paul O'Neill latest to be added to list](https://media.nbcsportschicago.com/2023/05/web-040523-robinson-getty-3.jpg?quality=85&strip=all&fit=4054%2C2280)
Every MLB team's retired numbers – NBC Sports Chicago
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Yankees' retirement of Paul O'Neill's number might be a stretch - Pinstripe Alley
![Yankees retired numbers: Paul O'Neill latest to be added to list](https://elitesportsny.com/wp-content/uploads/2018/12/paul_o-neill.jpg)
New York Yankees history: Paul O'Neill's number 21 must be retired
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Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx
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Swing and a Hit by Paul O'Neill
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As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
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The Yankees have retired so many numbers that they're down to just four available for new recruits: 38, 50, 57 and 69. : r/baseball
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Yankees next retired number prediction
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Mariano Rivera's number retired by Yankees - Newsday