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

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

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

Fans boo Yankees management as New York retires All-Star right fielder Paul O'Neill's No. 21 jersey

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Sagging Yankees right ship for an afternoon, beat Blue Jays on Andrew Benintendi home run - The Boston Globe

Highlight] Paul O'Neill's #21 is enshrined forever in Monument Park, never to be worn again : r/NYYankees