Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox

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

MassMutual becomes 'signature sponsor' for Boston Red Sox

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

Red Sox reach $170 million jersey-patch deal, Mets also interested

Boston Red Sox Archives - SportsPro

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

Proud Partner of the Boston Red Sox

Red Sox reach $170 million jersey-patch deal, Mets also interested

MassMutual, Red Sox announce multiyear partnership