Red Sox uniforms will be unaffected by new MLB rules in 2023
Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox
I'm glad the Phillies didn't put sponsors on their jerseys. It looks so cheap. : r/phillies
John Hancock ending long-held Boston Red Sox sponsorship
Phillies may have sponsored uniform patch this season
Red Sox will have MassMutual logo on their jerseys beginning in 2023
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MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
Logos and uniforms of the Boston Red Sox - Wikipedia
Yankees won't have jersey patch for Opening Day, but it's coming
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News