MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit
Red Sox, MassMutual Partner Up
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
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MassMutual becomes 'signature sponsor' for Boston Red Sox
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Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
Red Sox kicks off plan to bring all BPS 6th graders to Fenway Park
