All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News

MLB giving Roberto Clemente Award winners new patch for caps - ESPN

Pirates, Mets wear 21 on Roberto Clemente Day

Why are MLB players wearing 21? Tributes around the league for Pirates legend explained

Baseball Celebrates Clemente with “21” Patches; Pirates and Award Winners All Wearing #21 – SportsLogos.Net News

A Mystery Surrounding the Roberto Clemente '21' Patch

MLB Ballplayers Can Now Wear #21 Patch on Ballcaps and Helmets – SportsLogos .Net News

Baseball Celebrates Clemente with “21” Patches; Pirates and Award Winners All Wearing #21 – SportsLogos.Net News

MLB Ballplayers Can Now Wear #21 Patch on Ballcaps and Helmets – SportsLogos .Net News

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