Take us out to the ballgame - BOStoday
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
MassMutual, Red Sox announce multiyear partnership
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald
Red Sox, MassMutual Partner Up
Yankees Jersey Patch Deal Is MLB's Richest at $25M a Year –
Final Red Sox homestand of the year is one of lasts – Boston 25 News
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
Twins making careful decision about ad patches on players' jerseys
MLB Team Sponsorship Revenue Grew To $1.5 Billion In 2023, Report Shows
Red Sox play ball with a new signature sponsor - BOStoday