MassMutual is first jersey patch sponsor of the Red Sox
Red Sox reportedly sign jersey patch deal with MassMutual
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
Red Sox play ball with a new signature sponsor - BOStoday
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Why MassMutual invested in a jersey sponsorship with the Red Sox
Red Sox uniforms will be unaffected by new MLB rules in 2023
MassMutual will be the first sponsor to have its logo on Red Sox uniforms - The Boston Globe
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
Why are the Angels wearing jersey patches with 'FBM' on them? - Los Angeles Times
Boston Red Sox Announce MassMutual Patch on Jerseys Starting in 2023 – SportsLogos.Net News
I'm glad the Phillies didn't put sponsors on their jerseys. It looks so cheap. : r/phillies
A $17 million annual deal by the Red Sox stokes debate on the value of jersey patches in a market flooded with options
Detroit Tigers to add Meijer patch on jerseys