Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

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MassMutual will be the first sponsor to have its logo on Red Sox

Red Sox to sport MassMutual logo under new partnership - Boston

MassMutual becomes 'signature sponsor' for Boston Red Sox

MassMutual will be the first sponsor to have its logo on Red Sox

Red Sox to sport MassMutual logo under new partnership - Boston

Red Sox play ball with a new signature sponsor - BOStoday

Houston Astros reveal Oxy as first ever jersey partner - SportsPro

Red Sox play ball with a new signature sponsor - BOStoday

Red Sox debut new uniform advertisements as part of 10-year deal

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