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Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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Red Sox reach $170 million jersey-patch deal, Mets also interested
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MassMutual becomes 'signature sponsor' for Boston Red Sox
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20160115 xbs wit by The Island 360 - Issuu
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Red Sox reveal first-ever uniform advertisements; MassMutual
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Houston Astros reveal Oxy as first ever jersey partner - SportsPro
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Boston Red Sox land a 10-year partnership with MassMutual
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Boston Red Sox land a 10-year partnership with MassMutual
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MassMutual, Red Sox announce multiyear partnership
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Red Sox, MassMutual Partner Up
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Red Sox play ball with a new signature sponsor - BOStoday