Boston Red Sox Archives - SportsPro
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
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The Boston Red Sox announced a major off-the-field partnership with MassMutual – Boston 25 News
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Red Sox play ball with a new signature sponsor - BOStoday
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
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Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro