Oakland A's: Happy Roberto Clemente Day! - Athletics Nation
Roberto Clemente recorded 3,000th hit 50 years ago today - Bucs Dugout
Cody Sabol, Andrew McCutchen and surprise star shine at uplifting Roberto Clemente Foundation gala
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
Roberto Clemente Foundation 21
MLB celebrates Roberto Clemente Day
Roberto Clemente, Humanitarian – Society for American Baseball Research
Roberto Clemente: More than Latin America's baseball star
Roberto Clemente, Biography, Stats, & Facts
MLB's Pirates will honor Roberto Clemente by wearing his number