Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN
Demilio: Roberto Clemente Day Serves as Another Reminder to Retire
MLB's Pirates will honor Roberto Clemente by wearing his number
Pittsburgh Pirates will all wear No. 21 to celebrate Roberto
For the 'Great One': Pirates, MLB honor Roberto Clemente
Pirates Celebrate Roberto Clemente Day
Mets honor Roberto Clemente at Citi Field
Sources: MLB letting more players to wear No. 21 for Clemente Day
Puerto Rican MLB players can wear number 21 on Clemente Day
For the 'Great One': PittsburghPirates, Major League Baseball
Some MLB Players Wearing #21, All Wearing 21 Patches Today for
MLB's Puerto Rican-born players honor Roberto Clemente by wearing 21
MLB celebrates Roberto Clemente Day, ceremony at Citi Field - CBS
To Honor Roberto Clemente, MLB Expands List of Who Can Wear No. 21
It's time for Roberto Clemente's No. 21 to be retired across