Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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MassMutual, Red Sox announce multiyear partnership
Boston Red Sox Archives - SportsPro
Houston Astros reveal Oxy as first ever jersey partner - SportsPro
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Red Sox reveal first-ever uniform advertisements; MassMutual
It's come to this: our Red Sox as human billboards
Sox say so long to John Hancock. But hello maybe to MassMutual
NYSportsJournalism.com - Home
Sox say so long to John Hancock. But hello maybe to MassMutual
Sox say so long to John Hancock. But hello maybe to MassMutual
Red Sox play ball with a new signature sponsor - BOStoday
Red Sox to sport MassMutual logo under new partnership - Boston
Houston Astros reveal Oxy as first ever jersey partner - SportsPro
