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

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

Red Sox Foundation

Jennifer Halloran posted on LinkedIn

Red Sox Mass Mutual Collaboration – NBC Boston

Red Sox manager Alex Cora on Terry Francona: 'It's time

Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit

Chris Creamer SportsLogos.Net on X: The Diamondbacks join the San Diego Padres and Boston Red Sox as the first three MLB teams to announce in-game jersey ads for 2023 /

MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe

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

Jose Altuve hits 2-run HR to complete 1st cycle of his career, Astros crush Red Sox 13-5

Marlins, ADT announce jersey patch sponsorship - Fish Stripes