MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MassMutual is first jersey patch sponsor of the Red Sox
MLB Jersey Patch Market Warming Up As Season Approaches
Larger-Than-Life Drone Show Celebrates MassMutual's Sponsorship of the Boston Red Sox
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A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
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The Boston Red Sox announced a major off-the-field partnership with MassMutual – Boston 25 News
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Red Sox play ball with a new signature sponsor - BOStoday
UniWatch] Gross: Red Sox Reveal Uniform Advertisement for 2023 : r/baseball