MassMutual is first jersey patch sponsor of the Red Sox

Larger-Than-Life Drone Show Celebrates MassMutual's Sponsorship of the Boston Red Sox

Red Sox accidentally picked Yankees fan to sponsor jerseys for next decade

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

MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal

Red Sox accidentally picked Yankees fan to sponsor jerseys for next decade

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

Red Sox Reportedly Strike $170M Jersey Patch Deal

Bruins reveal cybersecurity firm Rapid7 will be first sponsor of patch on game and practice jerseys - The Boston Globe

MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal

MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald