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Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times
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Final Red Sox homestand of the year is one of lasts – Boston 25 News
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MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
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John Hancock ending long-held Boston Red Sox sponsorship
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A rough patch: the Astros' new sponsorship deal with Oxy is doubly ugly, Houston Astros
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Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
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MassMutual logo patches
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Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox
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The Future Of Jersey Sponsorships Across US Sports Leagues
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Red Sox Sign Japanese Batting Champ Yoshida - Rafu Shimpo
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Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
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Red Sox will not be affected by MLB's new uniform rules in 2023