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Mets honor Roberto Clemente at Citi Field
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Roberto Clemente Day, MLB Together
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Pirates Celebrate Roberto Clemente Day, WESB B107.5-FM/1490-AM
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Five Astros wear No. 21 on Roberto Clemente Day
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Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ESPN
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Roberto Clemente Day celebrated across Major League Baseball
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Pirates will honour Roberto Clemente by wearing his No. 21 on Clemente Day - Article - Bardown
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Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
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Roberto Clemente Day Baseball Hall of Fame
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MLB celebrates Roberto Clemente Day, ceremony at Citi Field