Best Pirates players by uniform number
Roberto Clemente's #21 To Be Worn By All Pittsburgh Pirates For Clemente Day
Celebrating Roberto Clemente day : r/baseball
To Honor Roberto Clemente, MLB Expands List of Who Can Wear No. 21 - Sports - Remezcla
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Retire 21: Supporters Seek To Honor Baseball Legacy Of Roberto Clemente
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Mets, Pirates to Wear No. 21 on Clemente Day - Metsmerized Online
For the 'Great One'; Pirates, MLB honor Roberto Clemente - The San Diego Union-Tribune
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
For the 'Great One'; Pirates, MLB honor Roberto Clemente
Demilio: Roberto Clemente Day Serves as Another Reminder to Retire No. 21
Mets honor Roberto Clemente at Citi Field