Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
John Hancock ending long-held Boston Red Sox sponsorship
MLB Teams with Jersey Patch Sponsors for the 2023 Season - Zoomph
MLB Team Sponsorship Revenue Grew To $1.5 Billion In 2023, Report Shows
Cleveland Guardians Announce Jersey Sponsorship - Sports Illustrated Cleveland Guardians News, Analysis and More
MassMutual is first jersey patch sponsor of the Red Sox
Final Red Sox homestand of the year is one of lasts – Boston 25 News
Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
Red Sox will have MassMutual logo on their jerseys beginning in 2023 – Blogging the Red Sox
Sox say so long to John Hancock. But hello maybe to MassMutual. - The Boston Globe
Official Charity of the Boston Red Sox Red Sox Foundation - Red Sox Foundation
Boston Red Sox mascots Wally and Tessie display the patch during a News Photo - Getty Images