MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MassMutual is first jersey patch sponsor of the Red Sox
Yankees get over $20 million a year for Starr Insurance patch
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
MLB Teams with Jersey Patch Sponsors for the 2023 Season - Zoomph
A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
Why MassMutual invested in a jersey sponsorship with the Red Sox
Why MassMutual invested in a jersey sponsorship with the Red Sox
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal