MassMutual is first jersey patch sponsor of the Red Sox

What's that patch on Giants jerseys? Everything you need to know about historic partnership – KNBR

Boston Red Sox sign BetMGM as first betting sponsor

John Hancock ending long-held Boston Red Sox sponsorship

Chris Cotillo on X: MassMutual is the new “signature partner” of the Red Sox. They get a jersey patch and the sign that replaces the John Hancock sign in center field. /

Boston Red Sox and Springfield-based life insurer, MassMutual partner up

Posts - Baseball

Reds get $5M per year from Kroger for uniform patch - Redleg Nation