I'm not saying that Roma won't win tomorrow, but I am not sure that Atalanta will just give up. With a win, Atalanta secure the CL, in front of their own fans. It's gonna be a full stadium.
True, Atalanta will qualify for the CL even with one single win in the next three matches, and it doesn't even have to be tomorrow. I think they have some easy matches in the last two rounds. But I still think that they won't leave it late and they'll give their best tomorrow.