Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
For the first time, historic Boston Red Sox jersey will have a sponsor patch
2023 – SportsLogos.Net News
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
uniforms – SportsLogos.Net News
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
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MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster