Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente - NBC Sports
Pirates would again like to wear No. 21 in 2021
Roberto Clemente and the magic of No. 21 - MLB - ESPN
Nats DH Cruz, other Clemente Award winners wear '21' on caps - The San Diego Union-Tribune
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
Hot take: Roberto Clemente Day should be just like Jackie Robinson Day💯⚾️ : r/mlb
Roberto Clemente Day And 2023 MLB World Series Odds
Lindor, Báez among MLB players honoring Roberto Clemente on Wednesday
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
A's Vimael Machin 'honored' to wear No. 21 on Roberto Clemente Day
Should Roberto Clemente's #21 Be Universally Retired Across MLB?
Roberto Clemente - Wikipedia