Yankees won't have jersey patch for Opening Day, but it's coming
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MassMutual, Red Sox announce multiyear partnership
MLB's Detroit Tigers expand Meijer sponsorship with jersey patch deal
It's come to this: our Red Sox as human billboards
Logos and uniforms of the Boston Red Sox - Wikipedia
Yankees Announce Starr Insurance Jersey Patch, Partnership in Video, News, Scores, Highlights, Stats, and Rumors
MassMutual, Red Sox announce multiyear partnership
Red Sox will have MassMutual logo on their jerseys beginning in 2023
Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times