MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox
Red Sox Reportedly Strike $170M Jersey Patch Deal
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
jerseys – Blogging the Red Sox
MassMutual, Red Sox announce multiyear partnership
Red Sox play ball with a new signature sponsor - BOStoday
What MLB teams will have uniform ad patches in 2023?
MassMutual is first jersey patch sponsor of the Red Sox
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
jerseys – Blogging the Red Sox
