Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times
Red Sox reveal first-ever uniform advertisements; MassMutual patches coming in 2023
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
Red Sox uniforms will be unaffected by new MLB rules in 2023
Cardinals beat Red Sox 4-3 as Kenley Jansen blows 9th inning lead for 2nd straight day
Boston Red Sox confirm MassMutual as signature sponsor - SportsPro
MassMutual, Red Sox announce multiyear partnership
Red Sox reach $170 million jersey-patch deal, Mets also interested
Cleveland Guardians Announce Jersey Sponsorship - Sports Illustrated Cleveland Guardians News, Analysis and More
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe