Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe

Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe

Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe

Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe

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

Red Sox to sport MassMutual logo under new partnership - Boston Business Journal

For the first time, historic Boston Red Sox jersey will have a sponsor patch

Marcus Smart loving Trevor Story, Franchy Cordero wearing his 36 as Red Sox wear Celtics jerseys on plane to Chicago

Red Sox to sport MassMutual logo under new partnership - Boston Business Journal

It's come to this: our Red Sox as human billboards

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Boston Red Sox sign BetMGM as first betting sponsor