MassMutual is first jersey patch sponsor of the Red Sox
A rough patch: the Astros' new sponsorship deal with Oxy is doubly ugly, Houston Astros
It's come to this: our Red Sox as human billboards
Red Sox play ball with a new signature sponsor - BOStoday
Sustainability and Inclusion MassMutual 2022 Annual Report
125th Anniversary Bay Path University
After nearly 40 years, John Hancock to step back from sponsorship of Boston Marathon - The Boston Globe
Hot Stove #229 – Rooting for Laundry – Seinfeld and Logoland
MLB Teams with Jersey Patch Sponsors for the 2023 Season - Zoomph
Fenway Sports Management
Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Red Sox reportedly sign jersey patch deal with MassMutual
jerseys – Blogging the Red Sox