Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
For the first time, historic Boston Red Sox jersey will have a sponsor patch
Boston Red Sox sign BetMGM as first betting sponsor
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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MassMutual is first jersey patch sponsor of the Red Sox
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Men's Boston Red Sox Pro Standard White Team Logo T-Shirt
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
Red Sox reach $170 million jersey-patch deal, Mets also interested
Red Sox play ball with a new signature sponsor - BOStoday