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Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
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Official Charity of the Boston Red Sox
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Red Sox Foundation
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Logos and uniforms of the Boston Red Sox - Wikipedia
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Red Sox accidentally picked Yankees fan to sponsor jerseys for
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Boston Red Sox bag US$170m MassMutual jersey patch deal, says
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MassMutual will be the first sponsor to have its logo on Red Sox
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Red Sox reveal first-ever uniform advertisements; MassMutual
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A rough patch: the Astros' new sponsorship deal with Oxy is doubly