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Paul O'Neill talks jersey number retired by New York Yankees

Paul O'Neill's No. 21 journey started at his first MLB game

Yankees will retire Paul O'Neill's No. 21 jersey number on Aug. 21

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Paul O'Neill thanks Yankees organization, fans on Twitter

New York Yankees retired Paul O'Neill's No. 21 jersey

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Yankees Will Retire Paul O'Neill's Number This Summer

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