Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

Red Sox play ball with a new signature sponsor - BOStoday

Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro

Proud Partner of the Boston Red Sox

Red Sox to sport MassMutual logo under new partnership - Boston Business Journal

Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro

It's come to this: our Red Sox as human billboards

Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox

MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)

MassMutual is first jersey patch sponsor of the Red Sox