MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
jersey patch – SportsLogos.Net News
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
2023 MLB Uniform Tracker – March 2023 – SportsLogos.Net News
SportsLogos.Net's 2022 Year In Review – SportsLogos.Net News
boston red sox – SportsLogos.Net News
Red Sox will have MassMutual logo on their jerseys beginning in 2023 – Blogging the Red Sox
all-star game – SportsLogos.Net News
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
SportsLogos.Net's 2022 Year In Review – SportsLogos.Net News
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
MLB 2023 Uniform/Logo Changes - Sports Logo News - Chris Creamer's Sports Logos Community - CCSLC - SportsLogos.Net Forums