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New York Yankees history: Paul O'Neill's number 21 must be retired
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New York Yankees to retire Paul O'Neill's number this summer
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[Marchand] The Yanks are set to retire Paul O'Neill's No. 21 on Aug. 21st at Yankee Stadium. : r/NYYankees
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Ask Pinstripe Alley 1/11/17: Will the Yankees ever retire Paul O'Neill's number? - Pinstripe Alley
Paul O'Neill Yankees No. 21 retired
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Paul O'Neill on No. 21 retirement Yankees
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Yankees retired numbers ahead of Paul O'Neill's 2022 ceremony
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New York Yankees retired Paul O'Neill's No. 21 jersey