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All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
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Let's Talk Sports: Who is identified by a uniform number?
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The only day MLB players can wear No. 42? Jackie Robinson Day
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Pirates will honor Roberto Clemente by wearing his No. 21 on their jerseys - ESPN
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Italian Americans At Bat: From Sandlots to the Major Leagues by Mary Steiner - Issuu
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MLB's Pirates will honor Roberto Clemente by wearing his number
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2022 MLB All-Star Game live updates: AL wins on back-to-back homers - Los Angeles Times
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Derek Jeter: Twenty facts, stats and stories you might not know - Sports Illustrated
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Remembering the life and legacy of #21 on Roberto Clemente Day
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Blue Jays retire Roy Halladay's No. 32 before Opening Day game vs. Yankees – New York Daily News
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MLB Opening Day: The players LGBTQ fans will cheer for this season - Outsports