Paul O'Neill (baseball) - Wikipedia
Yankees retire Paul O'Neill's No. 21 jersey - NBC Sports
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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 – KXAN Austin
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed - The San Diego Union-Tribune
Fans boo Yankees management as New York retires All-Star right fielder Paul O'Neill's No. 21 jersey
Hysteria over Clint Frazier No. 7 story shows that Yankees and their loyalists need to calm down – New York Daily News