MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
The Boston Red Sox announced a major off-the-field partnership with MassMutual
Red Sox will have MassMutual logo on their jerseys beginning in 2023 – Blogging the Red Sox
MassMutual is first jersey patch sponsor of the Red Sox
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Red Sox reveal 2023 uniform change
Red Sox Reportedly Strike $170M Jersey Patch Deal
MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
Red Sox kicks off plan to bring all BPS 6th graders to Fenway Park
Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
Red Sox will not be affected by MLB's new uniform rules in 2023
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Houck leads Red Sox past AL East champion Orioles 6-1 in finale - WTOP News