MLB Jersey Numbers on X: All uniformed #Pirates personnel will take the field in number 21 this evening to celebrate the legacy of Roberto Clemente. #RobertoClementeDay / X
MLB expands list of who can wear No. 21 to honor Roberto Clemente on Sept. 15 - ESPN
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
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All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Cincinnati Latest News, Photos and Videos
Roberto Clemente and the magic of No. 21 - MLB - ESPN
Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN
Cincinnati Latest News, Photos and Videos
Baseball Celebrates Clemente with “21” Patches; Pirates and Award Winners All Wearing #21 – SportsLogos.Net News
October 1, 1967: Roberto Clemente 'manages' Pirates in season finale and wins fourth NL batting crown – Society for American Baseball Research
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Five Astros wear No. 21 on Roberto Clemente Day
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