Roberto Clemente Award winners wear Pirates legend's 21 on caps
Pirates to once again wear No. 21 for Roberto Clemente Day
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
Pirates, Mets wear 21 on Roberto Clemente Day
Pirates to once again wear No. 21 for Roberto Clemente Day
Roberta Clemente Roberto clemente, Pittsburgh pirates baseball, Baseball highlights
Major League Baseball marks Roberto Clemente Day with ceremony at Citi Field - ABC7 New York
Pirates to once again wear No. 21 for Roberto Clemente Day
MLB giving Roberto Clemente Award winners new patch for caps - ESPN