Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – KX NEWS
Mariano_Rivera
Aaron_Boone
Yankees fans boo Hal Steinbrenner during Paul O'Neill ceremony
Yankees fans should go ahead and vent their frustrations, but this one's not over yet
Paul O'Neill (baseball) - Wikipedia
New York Yankees history: Paul O'Neill's number 21 must be retired
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – KGET 17
Yankees retire Paul O'Neill's No. 21 jersey, Brian Cashman booed
Yanks' Cashman backs Boone to turn `slings' into 'bouquets
Aaron_Boone
NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
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Brian_Cashman
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN