Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente
Best Pirates players by uniform number
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
Rangers, MLB honor late Hall of Famer Roberto Clemente with uniform patch, jersey numbers
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Pirates will honor Roberto Clemente by wearing his No. 21 on their jerseys - ESPN
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
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It's time for Roberto Clemente's No. 21 to be retired across baseball - Bucs Dugout
Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN
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Roberto Clemente Day: Why is Roberto Clemente celebrated and who will receive the Roberto Clemente Award?
Pirates to wear No. 21 on Roberto Clemente Day
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