MassMutual is first jersey patch sponsor of the Red Sox
53 Red Sox Emblem Stock Photos, High-Res Pictures, and Images - Getty Images
MLB's announced jersey patch deals so far-San Diego Padres: Motorola. Boston Red Sox: MassMutual. Los Angeles Angels: Foundation Building Materials. Arizona Diamondbacks: Avnet : r/baseball
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
John Hancock ending long-held Boston Red Sox sponsorship
Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
Why more US leagues are embracing sponsored jersey patches, encroaching on 'sacred' real estate
Red Sox will have MassMutual logo on their jerseys beginning in 2023 – Blogging the Red Sox