Puerto Rican Twins don No. 21 in tribute to Roberto Clemente – Twin Cities
Retire No. 21 for Roberto Clemente - Our Esquina
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente – Twin Cities
Roberto Clemente remains Latino legend 50 years after death
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Twins, Royals celebrate Roberto Clemente Day at Target Field
Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente
Cardinals, Molina homers wearing 21 on Roberto Clemente Day
Retiring Clemente's '21': True Recognition for Latinos in the Majors – Society for American Baseball Research
MLoB/data/embedding_ids_all.json at master · dverheijden/MLoB · GitHub
Roberto Clemente, pioneering Latino player, honored by baseball - The Washington Post
Retiring Clemente's '21': True Recognition for Latinos in the Majors – Society for American Baseball Research
Roberto Clemente, pioneering Latino player, honored by baseball - The Washington Post
Cardinals, Molina homers wearing 21 on Roberto Clemente Day
Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN
The Humanitarian Efforts of Roberto Clemente – LA Dodger Talk