Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
sam kennedy – Blogging the Red Sox
In Chris Sale, Corey Kluber, and James Paxton, the Red Sox have a trio of aging aces. How much can they still contribute? - The Boston Globe
Boston Red Sox Winter Weekend coming to Springfield; annual fan event will be held Jan. 17-18 at MGM Springfield and MassMutual center
Boston Red Sox on the Forbes MLB Team Valuations List
Red Sox - MassMutual
Red Sox reportedly sign jersey patch deal with MassMutual
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Boston Red Sox on the Forbes MLB Team Valuations List
Boston Red Sox Winter Weekend at MGM Springfield canceled for 2022; team cites ongoing MLB lockout as reason
Sustainability and Inclusion MassMutual 2022 Annual Report