Roberto Clemente Day culminates with ceremony celebrating Jacob Stallings
Ranking MLB's City Connect uniforms - ESPN
Dodgers News: Kiké Hernandez, Edwin Rios Honored To Wear No. 21 On Roberto Clemente Day
Que Viva Clemente! Roberto Lives On in the Hearts of Latino Major Leaguers – Society for American Baseball Research
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
Baseball celebrates Roberto Clemente Day to honour Puerto Rican legend - World Baseball Softball Confederation
MLB gets it right with Roberto Clemente No. 21 jersey policy
Demilio: Roberto Clemente Day Serves as Another Reminder to Retire No. 21
Ranking MLB's all-time greatest uniforms - ESPN
Roberto Clemente Day to Be Held Throughout MLB on Thursday – NBC Bay Area
MLB News: Pirates to debut MLB City Connect uniforms on June 27 - Bucs Dugout