After this week, it’s all but official that it’s time for the St. Louis Cardinals to start thinking about roster construction for 2019 and beyond. There are a lot of ways they can improve next season. One of the more obvious ways to improve moving forward is the bullpen, the rightful whipping boy du jour. Their bullpen xFIP this year is 6th worst in the game through Monday night’s debacle. Their Win Probability Added (WPA) is dead last at -3.95, and it’s not even particularly close to the second worst team (the Mets at -2.