Roberto Clemente, Biography, Stats, & Facts
Roberto Clemente Day: Pirates and Mets wear 21
Petition · RETIRE Roberto Clemente's #21 in all MLB ·
MLB celebrates Roberto Clemente Day, ceremony at Citi Field
MLB great Roberto Clemente remains Latino legend 50 years after his death
Pirates players, coaches honored to wear No. 21 in celebration of Roberto Clemente Day
No, we do not need to retire Roberto Clemente's number across baseball - NBC Sports
Roberto Clemente's No. 21 is 'retired in our hearts' but not on most MLB rosters - The Athletic
MLB should retire Roberto Clemente's number - ESPN - Buster Olney Blog- ESPN
Black and Gold: Baseball should retire Roberto Clemente's No. 21
Roberto Clemente remains Latino legend 50 years after death
Roberto Clemente: Baseball Rebel – Society for American Baseball Research
The Clemente family would like to semi-retire Roberto Clemente's number - NBC Sports
Roberto Clemente and the magic of No. 21 - MLB - ESPN