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Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
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Boston Red Sox sign BetMGM as first betting sponsor
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Phillies may have sponsored uniform patch this season
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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
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Red Sox reportedly sign jersey patch deal with MassMutual
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A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
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MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)
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Logos and uniforms of the Boston Red Sox - Wikipedia
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Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times