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MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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Houston Astros reveal Oxy as first ever jersey partner - SportsPro
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Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
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For the first time, historic Boston Red Sox jersey will have a sponsor patch
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Marcus Smart loving Trevor Story, Franchy Cordero wearing his 36 as Red Sox wear Celtics jerseys on plane to Chicago
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
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It's come to this: our Red Sox as human billboards
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Boston Red Sox sign BetMGM as first betting sponsor