MassMutual, Red Sox announce multiyear partnership
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
NYSportsJournalism.com - Media Kit
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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Houston Astros reveal Oxy as first ever jersey partner - SportsPro
Boston Red Sox sign BetMGM as first betting sponsor
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Red Sox reportedly sign jersey patch deal with MassMutual
Boston Red Sox Archives - SportsPro
Houston Astros reveal Oxy as first ever jersey partner - SportsPro
20160115 xbs wit by The Island 360 - Issuu
Red Sox, MassMutual Partner Up