MassMutual, Red Sox announce multiyear partnership
MassMutual is first jersey patch sponsor of the Red Sox
Larger-Than-Life Drone Show Celebrates MassMutual's Sponsorship of the Boston Red Sox
MLB's Rangers hire CSM to find first jersey patch sponsor - Sportcal
Milwaukee Brewers Announce Teams 1st Jersey Patch And How They Will Spend The Profit
MLB Jerseys' to Feature Corporate Sponsor Logos for First Time Ever In 2023
MLB uniforms will have advertising beginning in the 2023 season - The Boston Globe
Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox
Red Sox Mass Mutual Collaboration – NBC Boston
Twins making careful decision about ad patches on players' jerseys
Uniform Sponsorship in MLB: Ads on Players' Attire
A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports