Roberto Clemente Award winners wear Pirates legend's 21 on caps
Roberto Clemente Day: Pirates and Mets wear 21
ESPN: MLB to allow Pirates, Puerto Rican players, award nominees to wear No. 21 on Roberto Clemente Day
All of MLB's Puerto Rican players can wear No. 21 on Roberto Clemente Day
MLB celebrates Roberto Clemente Day, ceremony at Citi Field
Pirates will wear Roberto Clemente No. 21
Pittsburgh Pirates Celebrate Roberto Clemente Day By Wearing His Number
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
Today Is Roberto Clemente Day
Puerto Rican MLB players can wear number 21 on Clemente Day