MLB franchise the Boston Red Sox agree ten-year partnership with Massachusetts-based insurance company MassMutual.
Boston Red Sox and Springfield-based life insurer, MassMutual
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
Buy your Red Sox jersey now before sponsor logo gets added to it
MassMutual will be the first sponsor to have its logo on Red Sox
today's red sox uniforms
Boston Red Sox and Springfield-based life insurer, MassMutual
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
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Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
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