Major League Baseball marks Roberto Clemente Day with ceremony at Citi Field - ESPN
Petition 21 millions signatures to retire MLB #21
Altoona Curve honors Pirates legend Roberto Clemente, retires No. 21
Why are MLB players wearing 21? Tributes around the league for Pirates legend explained
Roberto Clemente signed with Dodgers in 1954
Joshua Palacios leads Roberto Clemente Day celebration
Roberto Clemente, pioneering Latino player, honored by baseball - The Washington Post
New York Yankees 7 Pittsburgh Pirates 5 - Sept. 15, 2023, PNC Park
Senate resolution honoring Pirates baseball legend Roberto Clemente
Lindor, Carrasco shine on Clemente Day, Mets beat Pirates 7-1 - NBC Sports
For the 'Great One'; Pirates, MLB honor Roberto Clemente