Doug Jones and Scott Brown
I would agree, although Brown came much closer to winning reelection than Jones did. He lost to Elizabeth Warren by "only" 7%, managing to win over ~230,000 Obama voters, while Jones lost by more than 20% and got only about 70,000 Trump voters to support him. Of course, polarization increased considerably between 2012 and 2020, and Alabama is a much more partisan state downballot than Massachusetts is.
There are also significantly more "traditional" swing voters in Massachusetts (non-evangelical whites, educated commuters, blue-collar Catholics both white and Latino), as is fairly common throughout New England.
