MassMutual is first jersey patch sponsor of the Red Sox

St. Louis Cardinals land Stifel as first jersey patch sponsor

Cleveland Guardians to wear Marathon jersey patch

A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options

Red Sox accidentally picked Yankees fan to sponsor jerseys for next decade

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

Red Sox Reportedly Strike $170M Jersey Patch Deal

Detroit Tigers to add Meijer patch on jerseys

MassMutual, Red Sox announce multiyear partnership

Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports

Marlins, ADT announce jersey patch sponsorship - Fish Stripes

FIRST LOOK: sponsor patches on 2023 MLB jerseys

Red Sox Mass Mutual Collaboration – NBC Boston