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MLB celebrates Roberto Clemente Day as players wear No. 21, call for number to be retired
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MLB - Roberto Clemente did it all.
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Remembering Roberto Clemente as a Black man who fought against racial injustice - Los Angeles Times
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Roberto Clemente Award 2022 nominees
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Oakland A's: Happy Roberto Clemente Day! - Athletics Nation
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Pirates will wear Roberto Clemente No. 21
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Carlos Delgado says MLB should retire Roberto Clemente's No. 21
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Rivera] League source confirms league-wide retirement of Roberto Clemente's #21 is not happening at this time and there is no current plan in place for it to occur : r/baseball
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Puerto Rican Twins don No. 21 in tribute to Roberto Clemente – Twin Cities