SBJ Closing Bell: Red Sox officially sign MassMutual as patch sponsor
Ads Are Coming To New York Yankees Uniforms
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
Why MassMutual invested in a jersey sponsorship with the Red Sox
Red Sox reportedly sign jersey patch deal with MassMutual
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
The NFL's US$673m question: Will the league introduce jersey patch sponsors? - SportsPro
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
Red Sox reach $170 million jersey-patch deal, Mets also interested