Team Issued Roberto Clemente Day Blank Jersey - PIT vs. CIN - 9/15/2021

American Caramel – SABR's Baseball Cards Research Committee

21 - Team Issued White Pinstripe Jersey - Roberto Clemente Day - Mets vs. Pirates - 9/15/22 - Mets Win 7-1

Game-Used Roberto Clemente Day Jersey - Jacob Stallings - PIT vs. CIN - 9/15 /2021

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

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Team Issued Roberto Clemente Day Blank Jersey - PIT vs. CIN - 9/15/2021

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Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN

Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN

MLB expands list of who can wear No. 21 to honor Roberto Clemente on Sept. 15 - ESPN

Yard Goats to Retire Hall of Famer Roberto Clemente #21 at Dunkin' Donuts Park

PITTSBURGH PIRATES ROBERTO CLEMENTE DAY 21 HAT SGA CAP 9/15/2023

Roberto Clemente 50th Anniversary

Game-Used Roberto Clemente Day Jersey - Kyle Crick - PIT vs. CWS - 9/9/2020