I certainly thought our defense had improved this year--and said so, mostly because the pitching has been spectacularly good, the best in MLB after just 10 games.
But guess what? 9 of the 22 runs scored against the Sox were unearned. That to me bespeaks lousy defense--and the fact that Story played excellent defense at SS could not prevent the bungles by the likes of Rafaela, Abreu, Reyes, Casas, Devers, and Valdez.
Of those errors, to me the most forgivable one was by Devers, who had to deal with one of those in between high-hoppers, which he tried to grab while going backwards.
Rafaela's error was on a dead easy fly he decided to go casual on. Same goes for Abreu on an easy grounder single he let get through his legs. Same for Casas--of course Casas--on another easy grounder. Same for Valdez on a throw to 2b, which he dropped.
Also, let's not forget that, while I think we can all agree Trevor Story is superb on defense, at 2b or SS, he can't stay healthy. I hasten to add he's getting paid $22M/year primarily for hitting, which he has yet to do.
Speaking of hitting, I don't see a whole lot of them in next year's hypothetical all-defensive team. I think I see 3: Devers, Casas, and Duran--and the latter two are probables, not certainties.