MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
Boston Red Sox and Springfield-based life insurer, MassMutual partner up
MLB's Detroit Tigers expand Meijer sponsorship with jersey patch deal
Boston Red Sox sign BetMGM as first betting sponsor
MLB's new uniform rules won't prevent Red Sox from keeping Boston traditions – Boston Herald
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
Red Sox reach $170 million jersey-patch deal, Mets also interested
FIRST LOOK: sponsor patches on 2023 MLB jerseys
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
Red Sox, MassMutual Partner Up
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
jerseys – Blogging the Red Sox