Roberto Clemente Day: Pirates and Mets wear 21
MLB Clemente Award winners wear his 21 on caps for careers
Pirates will wear Roberto Clemente No. 21
Outside The Confines: Everyone wore 21 - Bleed Cubbie Blue
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MLB's Puerto Rican-born players honor Roberto Clemente by wearing 21
Lindor, Carrasco shine on Clemente Day as Mets beat Pirates
21 - Team Issued White Pinstripe Jersey - Roberto Clemente Day - Mets vs. Pirates - 9/15/22 - Mets Win 7-1
Pirates to once again wear No. 21 for Roberto Clemente Day
Mets honor Roberto Clemente at Citi Field
Happy Roberto Clemente Day! One of the best things MLB does in my opinion. : r/baseball