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SF Giants' Ortiz, García to wear No. 21 on Roberto Clemente Day
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Jackie Robinson - Wikipedia
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Jackie Robinson Day, when MLB players can wear No. 42
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The Real Story of Baseball's Integration That You Won't See in 42 - The Atlantic
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Jackie Robinson, Biography, Statistics, Number, Facts, & Legacy
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Jackie Robinson Day 2022: Why are all the 42 numbers blue? - Deseret News
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42 Facts About Jackie Robinson
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Mariners at forefront of establishing Jackie Robinson Day
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List of MLB Players Who Last Wore No. 42
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San Diego Padres: Celebrating Jackie Robinson Day
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Finding 42: Swing through these 10 NYC sites associated with Jackie Robinson
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Jackie Robinson: His Life and Career in Pictures
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Robinson, Jackie Baseball Hall of Fame
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Dodgers Throwback Uniforms, Everyone in 42 for Jackie Robinson Day 2019 – SportsLogos.Net News