By A Mystery Man Writer
Ten-year partnership sees the insurer become the MLB team's first jersey patch partner.
Red Sox will have MassMutual logo on their jerseys beginning in
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
MassMutual will be the first sponsor to have its logo on Red Sox
Massmutual red sox sign, MassMutual will be the first sponsor to have its logo on Red Sox
MassMutual will be the first sponsor to have its logo on Red Sox
8 takeaways from Red Sox' end-of-season press conference
The MassMutual jersey patch is displayed during a Boston Red Sox News Photo - Getty Images
MassMutual will be the first sponsor to have its logo on Red Sox
Massmutual red sox sign, MassMutual will be the first sponsor to have its logo on Red Sox
MassMutual will be the first sponsor to have its logo on Red Sox
MassMutual will be the first sponsor to have its logo on Red Sox
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro