MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
Red Sox, MassMutual near a $17M jersey patch deal - Boston Business Journal
MassMutual will be advertising on the Red Sox jersey in 2023. - Over the Monster
Cleveland Guardians to wear Marathon jersey patch
jerseys – Blogging the Red Sox
Red Sox reportedly sign jersey patch deal with MassMutual
Red Sox reportedly sign jersey patch deal with MassMutual
Ken Madsen on LinkedIn: Great spending the day at the “New Balance” headquarters in Boston…
I'm glad the Phillies didn't put sponsors on their jerseys. It looks so cheap. : r/phillies