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Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
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Boston Red Sox sign BetMGM as first betting sponsor
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Why MassMutual invested in a jersey sponsorship with the Red Sox
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Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
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MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
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Why more US leagues are embracing sponsored jersey patches, encroaching on 'sacred' real estate
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MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald
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St. Louis Cardinals land Stifel as first jersey patch sponsor
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Red Sox reportedly sign jersey patch deal with MassMutual
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Red Sox play ball with a new signature sponsor - BOStoday