It's time for Roberto Clemente's No. 21 to be retired across baseball - Bucs Dugout
Pirates celebrate Roberto Clemente Day 2020
Roberto Clemente's impact on Latin America still being celebrated
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of
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New Jersey politicians move to retire Roberto Clemente's No. 21
Pirates to once again wear No. 21 for Roberto Clemente Day
MLB celebrates Roberto Clemente Day, ceremony at Citi Field
Campaign To Retire Roberto Clemente's No. 21 Throughout MLB Gains
December 31: ¡Arriba Roberto! - Sports Illustrated Vault
Puerto Rican players follow Pirates' push to wear No. 21
Altoona Curve to officially retire Roberto Clemente's No. 21