MassMutual is first jersey patch sponsor of the Red Sox
Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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Red Sox reportedly sign jersey patch deal with MassMutual
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