MassMutual is first jersey patch sponsor of the Red Sox

What MLB teams will have uniform ad patches in 2023?

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

Marlins, ADT announce jersey patch sponsorship - Fish Stripes

MLB Teams with Jersey Patch Sponsors for the 2023 Season - Zoomph

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

Ken Madsen on LinkedIn: Great spending the day at the “New Balance” headquarters in Boston…

MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald

Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times

Red Sox reportedly sign jersey patch deal with MassMutual

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

Astros agree to deal to add Oxy jersey patch for 2023 season

jerseys – Blogging the Red Sox