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

Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

MLB's announced jersey patch deals so far-San Diego Padres: Motorola. Boston Red Sox: MassMutual. Los Angeles Angels: Foundation Building Materials. Arizona Diamondbacks: Avnet : r/baseball

Are There Ads On MLB Jerseys?

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

Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times

Cleveland Guardians Announce Jersey Sponsorship - Sports Illustrated Cleveland Guardians News, Analysis and More

What MLB teams will have uniform ad patches in 2023?

Cardinals beat Red Sox 4-3 as Kenley Jansen blows 9th inning lead for 2nd straight day

Ex-Yankees pitchers destined to miss Red Sox Opening Day

Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News

Red Sox drop series finale to Dodgers

MassMutual, Red Sox announce multiyear partnership