Puerto Rican players pushing for MLB to retire Clemente's number

Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente

Retire No. 21 for Roberto Clemente - Our Esquina

Pittsburgh Pirates Roberto Clemente number 21 should be retired - ESPN - OneNacion Blog- ESPN

Many want #21 retired in MLB - ESPN - OneNacion Blog- ESPN

MLB celebrates Roberto Clemente Day, ceremony at Citi Field

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Pittsburgh Pirates to honor Roberto Clemente in perfect way

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