Legendary MLB teams break marketing ground with insurance sponsors - Insurance News
MassMutual is first jersey patch sponsor of the Red Sox
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit
Boston Red Sox and Springfield-based life insurer, MassMutual partner up
Marlins, ADT announce jersey patch sponsorship - Fish Stripes
Why MassMutual invested in a jersey sponsorship with the Red Sox
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
It's come to this: our Red Sox as human billboards