Pirates, MLB honour 'the Great One' Roberto Clemente
Houston Astros: 8 players don No. 21 on Roberto Clemente Day
MLB allows Puerto Rican players to wear No. 21 on Roberto Clemente Day - ESPN
It's time for Roberto Clemente's No. 21 to be retired across baseball - Bucs Dugout
Altoona Curve to officially retire Roberto Clemente's No. 21 during ceremony Friday
Why Liam Hendriks is the White Sox' Roberto Clemente Award nominee – NBC Sports Chicago
To Honor Roberto Clemente, MLB Expands List of Who Can Wear No. 21 - Sports - Remezcla
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Pirates to once again wear No. 21 for Roberto Clemente Day
Rangers, MLB honor late Hall of Famer Roberto Clemente with uniform patch, jersey numbers
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Angels coach Jose Molina puts Roberto Clemente's number on his back – Orange County Register
Five Astros wear No. 21 on Roberto Clemente Day
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN