MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
Red Sox will not be affected by MLB's new uniform rules in 2023
MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)
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Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
Boston Red Sox and Springfield-based life insurer, MassMutual partner up
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
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
Tom Caron: Time is running out for Red Sox to make playoff push
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
MassMutual, Red Sox announce multiyear partnership
Red Sox kicks off plan to bring all BPS 6th graders to Fenway Park
Logos and uniforms of the Boston Red Sox - Wikipedia
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Boston Red Sox make history with record $170 million ad-patch deal, other teams to follow suit