Paul O'Neill on No. 21 retirement Yankees
New York Yankees star Paul O'Neill tops list of best MLB from Columbus
Paul O'Neill Day: Who will Yankees honor in Monument Park next?
Five Red Sox players who should have their jersey numbers retired
Derek_Jeter
Paul O'Neill (baseball) - Wikipedia
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Yankees to retire Paul O'Neill's No. 21: See the complete list of retired numbers
Paul O'Neill gets choked up learning Yankees will retire his number: Who's next for the 'greatest honor'?
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN
Derek Jeter's Number Retired in a Ceremony at Yankee Stadium
Paul O'Neill discusses number retirement by Yankees
Swing and a Hit by Paul O'Neill