Pirates will honour Roberto Clemente by wearing his No. 21 on Clemente Day - Article - Bardown
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
Family, friends and fans celebrate Clemente at fundraiser
Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente
For the 'Great One'; Pirates, MLB honor Roberto Clemente
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
Roberto Clemente Day celebrated around MLB in 2023
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente – Twin Cities