MassMutual will be the first sponsor to have its logo on Red Sox
Official Charity of the Boston Red Sox Red Sox Foundation - Red Sox Foundation
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
Boston Red Sox sign BetMGM as first betting sponsor
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MLB Jerseys' to Feature Corporate Sponsor Logos for First Time Ever In 2023
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MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MassMutual is first jersey patch sponsor of the Red Sox
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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FIRST LOOK: sponsor patches on 2023 MLB jerseys
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