MassMutual will be the first sponsor to have its logo on Red Sox
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Take us out to the ballgame - BOStoday
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
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Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit
Red Sox will have MassMutual logo on their jerseys beginning in 2023
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Logos and uniforms of the Boston Red Sox - Wikipedia
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro