MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe

It's come to this: our Red Sox as human billboards

Chris Cotillo on X: MassMutual is the new “signature partner” of the Red Sox. They get a jersey patch and the sign that replaces the John Hancock sign in center field. /

MassMutual is first jersey patch sponsor of the Red Sox

A rough patch: the Astros' new sponsorship deal with Oxy is doubly ugly, Houston Astros

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

Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports

MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster

Legendary MLB teams break marketing ground with insurance sponsors - Insurance News

Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023