Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed

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Yankees GM Brian Cashman Backs Aaron Boone to Turn Fans' 'Slings' into 'Bouquets' – NBC New York

New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN

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Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed – KGET 17

Aaron_Boone

Yankees Stadium Hijacked by Boos as Infuriated Fans Proclaim Frustration During Jersey Retirement Ceremony for Shocking Pinstripes Slump - EssentiallySports

Brian Cashman

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Yankees Fans Boo Brian Cashman, Hal Steinbrenner at Paul O'Neill's Jersey Retirement - Sports Illustrated

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Paul O'Neill (baseball) - Wikipedia

How has LaTroy Hawkins responded to the announcement that the Yankees are retiring number 21 for Paul O'Neill in 2022? - Quora

Brian Cashman: Yankees 'not waving white flag' on contending during rebuild – New York Daily News

New York Yankees history: Paul O'Neill's number 21 must be retired