I think the Yankees have some credible outs if Gregorius is hurt. Gray was terrible, but he also showed signs of being terrible when he got dealt. Lynn was just a warm body for a rotation that was undergoing its annual Severino running out of gas. Paxton projects to be a legitimate #2/#3 starter. If he could just give them some certainty that will be a big deal. As I noted above, I discount bullpen signings some because year to year consistency is so low in general. That said Ottavino is fine, and Britton if he stays healthy will be quite good. (as he got healthy last season that murderous ground ball rate came back) I think they have done a little more than Boston who has really just kept their October team together more or less. But that is still a heck of a team, with legitimate room to improve at 2B and 3B. Put another way, I think it is much more likely Devers will make a leap to another level than Andujar. The Wild Card for the Yankees lineup is Sanchez pretty clearly.
I think the Sox should be favored to win the division - though if the bet was us vs the field, I'd probably take the field.