Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
Paul O'Neill Yankees No. 21 retired
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
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NY Yankees retire Paul O'Neill's No. 21
Paul O'Neill
New York Yankees to retire All-Star Paul O'Neill's No. 21 jersey