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Red Sox debut new uniform advertisements as part of 10-year deal with MassMutual, Sports
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MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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Final Red Sox homestand of the year is one of lasts – Boston 25 News
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Boston Red Sox and Springfield-based life insurer, MassMutual partner up
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Boston Red Sox mascots Wally and Tessie display the patch during a News Photo - Getty Images
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It's come to this: our Red Sox as human billboards
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Red Sox Mass Mutual Collaboration – NBC Boston
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Boston Red Sox sign BetMGM as first betting sponsor
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FIRST LOOK: sponsor patches on 2023 MLB jerseys
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Marlins, ADT announce jersey patch sponsorship - Fish Stripes
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MassMutual is first jersey patch sponsor of the Red Sox
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The Boston Red Sox announced a major off-the-field partnership with MassMutual
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MLB Jersey Patch Market Warming Up As Season Approaches