Rays Star Calls Wearing No. 21 on Roberto Clemente Day 'An Honor
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Blue Jays players, personnel wear No. 21 in honour of Roberto Clemente
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
Why Liam Hendriks is the White Sox' Roberto Clemente Award nominee – NBC Sports Chicago
MLB giving Roberto Clemente Award winners new patch for caps - ESPN
MLB's Puerto Rican-born players honor Roberto Clemente by wearing 21
Roberto Clemente Day celebrated around MLB in 2023
Roberto Clemente Day: Pirates and Mets wear 21
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
Uniform number (Major League Baseball) - Wikiwand
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
List of Major League Baseball retired numbers - Wikipedia