Red Sox reportedly sign jersey patch deal with MassMutual
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Official Charity of the Boston Red Sox Red Sox Foundation - Red Sox Foundation
St. Louis Cardinals land Stifel as first jersey patch sponsor
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Red Sox Mass Mutual Collaboration – NBC Boston
MassMutual is first jersey patch sponsor of the Red Sox
Red Sox reveal 2023 uniform change
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Take us out to the ballgame - BOStoday
John Hancock ending long-held Boston Red Sox sponsorship