Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
The Boston Red Sox announced a major off-the-field partnership with MassMutual – Boston 25 News
Houston Astros reveal Oxy as first ever jersey partner - SportsPro
Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
NYSportsJournalism.com - Home
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
The Sociology of Sports - An Introduction, PDF, Sociology
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
MassMutual is first jersey patch sponsor of the Red Sox
NYSportsJournalism.com - Home
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
Boston Red Sox Archives - SportsPro
MassMutual, Red Sox announce multiyear partnership