MassMutual will be the first sponsor to have its logo on Red Sox

Marlins, ADT announce jersey patch sponsorship - Fish Stripes

Yankees Jersey Patch Deal Is MLB's Richest at $25M a Year –

MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal

Is the Yankees vs. Red Sox doubleheader on TV today? (9/14/23) FREE live stream, time, TV, channel for Game 1 on Prime

Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe

MassMutual, Red Sox announce multiyear partnership

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

Jennifer Halloran posted on LinkedIn

Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit

Boston Red Sox mascots Wally and Tessie display the patch during a News Photo - Getty Images