MassMutual will be the first sponsor to have its logo on Red Sox
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Red Sox to sport MassMutual logo under new partnership - Boston
Sox say so long to John Hancock. But hello maybe to MassMutual
MassMutual is first jersey patch sponsor of the Red Sox
Red Sox to sport MassMutual logo under new partnership - Boston
NYSportsJournalism.com - Home
Sox say so long to John Hancock. But hello maybe to MassMutual
Red Sox to sport MassMutual logo under new partnership - Boston
Red Sox Mass Mutual Collaboration – NBC Boston
MassMutual, Red Sox announce multiyear partnership
Houston Astros reveal Oxy as first ever jersey partner - SportsPro