MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
John Hancock ending long-held Boston Red Sox sponsorship
Yankees Jersey Patch Deal Is MLB's Richest at $25M a Year –
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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MLB Jersey Patch Market Warming Up As Season Approaches
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. /
Cleveland Guardians Announce Jersey Sponsorship - Sports Illustrated Cleveland Guardians News, Analysis and More
A rough patch: the Astros' new sponsorship deal with Oxy is doubly ugly, Houston Astros
Red Sox Reportedly Strike $170M Jersey Patch Deal
Red Sox Sign Japanese Batting Champ Yoshida - Rafu Shimpo
