Roberto Clemente Day to be held throughout MLB on Thursday
MLB celebrates Roberto Clemente Day, ceremony at Citi Field
Roberto Clemente Day: Pirates and Mets wear 21
MLB honors Roberto Clemente in 21st annual event
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Webinar on late MLB star Roberto Clemente set for Thursday evening
A's Vimael Machin 'honored' to wear No. 21 on Roberto Clemente Day
New FOCO bobblehead features legendary Pittsburgh Pirate Roberto
Thursday August 18 Activities - Roberto Clemente Day and
Roberto Clemente - Wikipedia
It's time for Roberto Clemente's No. 21 to be retired across
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MLB celebrates Roberto Clemente Day, ceremony at Citi Field