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New York Yankees retired numbers: Is team too generous? - Sports
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The Worst Players to Wear Each of the 21 Retired Yankees Numbers
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NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
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New York Yankees to retire Paul O'Neill's No. 21 on Aug. 21
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Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – WATE
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Number 21 Continues to Remain Sacred to the New York Yankees
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The second-best Yankee to wear each retired number - Part One
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Yankees Mag: The Warrior's Day Cometh
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MLB retired numbers include 10 for state players