Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente

Petition Roberto Clemente number 21 have to be retired from all MLB teams

Roberto Clemente: Baseball Rebel – Society for American Baseball Research

Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente

Roberto Clemente Foundation 21

Tampa Bay Rays honor Roberto Clemente by starting nine Latin American position players - The Boston Globe

MLB great Roberto Clemente remains Latino legend 50 years after his death

Roberto Clemente exhibit to open in Puerto Rico Feb. 21 Noticias Newswire - Hispanic Press Release Distribution Wire Service

MLB expands list of who can wear No. 21 to honor Roberto Clemente on Sept. 15 - ESPN

Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente