MassMutual is first jersey patch sponsor of the Red Sox

St. Louis Cardinals land Stifel as first jersey patch sponsor

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

Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox

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

Red Sox Reportedly Strike $170M Jersey Patch Deal

Why MassMutual invested in a jersey sponsorship with the Red Sox

MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)

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

FIRST LOOK: sponsor patches on 2023 MLB jerseys

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. /

Red Sox reportedly sign jersey patch deal with MassMutual