Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

MassMutual is first jersey patch sponsor of the Red Sox

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

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

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

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

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

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Houston Astros reveal Oxy as first ever jersey partner - SportsPro

Hc 011516 by The Island 360 - Issuu

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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