MassMutual will be the first sponsor to have its logo on Red Sox

Red Sox Mass Mutual Collaboration – NBC Boston

Red Sox will have MassMutual logo on their jerseys beginning in 2023 – Blogging the Red Sox

MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe

MassMutual, Red Sox announce multiyear partnership

John Hancock ending long-held Boston Red Sox sponsorship

Red Sox Winter Weekend

Red Sox play ball with a new signature sponsor - BOStoday

Legendary MLB teams break marketing ground with insurance sponsors - Insurance News

The Boston Red Sox announced a major off-the-field partnership with MassMutual

MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)

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

FIRST LOOK: sponsor patches on 2023 MLB jerseys

Chris Sale returns from injury, leads Red Sox over Tigers

Baseball looks a little uglier but business is booming - The Hustle

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