Boston Red Sox confirm MassMutual as signature sponsor - SportsPro

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Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro

Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe

Red Sox play ball with a new signature sponsor - BOStoday

Iconic Massachusetts Brands Unite: MassMutual Named Signature Partner and First Ever Jersey Patch Sponsor of the Boston Red Sox

Boston Red Sox Archives - SportsPro

20160115 xbs wit by The Island 360 - Issuu

Red Sox appear unlikely to enter the bidding for top free agent pitchers - The Boston Globe

Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News

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