Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Red Sox reach $170 million jersey-patch deal, Mets also interested
Boston Red Sox Archives - SportsPro
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Red Sox play ball with a new signature sponsor - BOStoday
NYSportsJournalism.com - Home
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
Boston Red Sox sign BetMGM as first betting sponsor
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe