The Red Sox Add a Slugger of Their Own, Signing J.D. Martinez - The New York Times
J.D. Martinez: 'I haven't been very good' in 2020, but he's hip to what has been the problem - The Boston Globe
Ryan Morik Elite Sports NY
JD Martinez taking shot at Yankees' facial hair policy seems baseless
MLB Hot Stove: Red Sox, J.D. Martinez agree to reported five-year, $110M deal
NY Mets rumors: J.D. Martinez isn't the perfect fit, but is one to pursue
After scuffling most of the night, Red Sox tie it in ninth inning, finish walkoff win over Yankees in 10th - The Boston Globe
Yankees–Red Sox rivalry - Wikipedia
J.D. Martinez Contract Includes Medical Protection For Red Sox, Third Opt-Out For Martinez - MLB Trade Rumors