MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Now in centerfield at Fenway Park!, Official Partner of the Boston Red Sox
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Red Sox lose another series to another bad team - CBS Boston
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Red Sox, MassMutual Partner Up
Why did Red Sox think Chris Sale deal would work out? – NBC Sports Boston
Devers, Turner lead Boston's HR derby; Red Sox top Cubs 8-3 for 6th straight win
About Us: Our Culture, People, and Purpose - MassMutual
MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald
Red Sox kicks off plan to bring all BPS 6th graders to Fenway Park
8 takeaways from Red Sox' end-of-season press conference