Lacking consistent quality starting pitching was a real burden for the New York Yankees last season. Even though the offense was the reason why the Yankees went down in the postseason, having dominant starting pitching would have helped tremendously.
Last season I think there was no clear ace. There were two guys, James Paxton and Domingo German, who had their streaks of several strong outings, and were the studs of the staff. But there was really no clear cut starter like a Gerrit Cole or Justin Verlander, that every time they went out you knew the team had a very good shot at winning.