MassMutual is first jersey patch sponsor of the Red Sox

Phillies may have sponsored uniform patch this season

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Logos and uniforms of the Boston Red Sox - Wikipedia

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Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports

The Boston Red Sox announced a major off-the-field partnership with MassMutual – Boston 25 News

Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox

Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro

Detroit Tigers to add Meijer patch on jerseys

Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal

MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe

Cleveland Guardians to wear Marathon jersey patch

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