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Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
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Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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Yankees Jersey Patch Deal Is MLB's Richest at $25M a Year –
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Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
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Marlins, ADT announce jersey patch sponsorship - Fish Stripes
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Ken Madsen on LinkedIn: Great spending the day at the “New Balance” headquarters in Boston…
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Red Sox Mass Mutual Collaboration – NBC Boston
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MLB Jersey Patch Market Warming Up As Season Approaches
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Red Sox, MassMutual Partner Up