Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
MLB 2023 Uniform/Logo Changes - Sports Logo News - Chris Creamer's Sports Logos Community - CCSLC - SportsLogos.Net Forums
jersey patch – SportsLogos.Net News
boston red sox – SportsLogos.Net News
boston red sox – SportsLogos.Net News
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
SportsLogos.Net's 2022 Year In Review – SportsLogos.Net News
Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023