MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Boston Red Sox sign BetMGM as first betting sponsor
MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
Phillies may have sponsored uniform patch this season
Red Sox reportedly sign jersey patch deal with MassMutual
Yankees Announce Starr Insurance Jersey Patch, Partnership in Video, News, Scores, Highlights, Stats, and Rumors
Astros agree to deal to add Oxy jersey patch for 2023 season
3,551 Shirt Sponsor Stock Photos, High-Res Pictures, and Images - Getty Images