Members of Red Sox wear No. 21 with pride on Roberto Clemente Day - The Boston Globe

Roberto Clemente

MLB continues to highlight the contributions & impact of Latinos throughout the game during Hispanic Heritage Month – Latino Sports

Roberto Clemente - Wikiquote

Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News

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Pirates wear No. 21 to honor Roberto Clemente

Boston Red Sox Nation: June 2006