It's the middle of the bullpen. Strop, Rosscup, Rondon, Ramirez have been good. Everyone outside of that can be shot into the sun. How many bullpens you know of that are more than 4 deep? Also, you're neglecting Motte who has been mostly good. Before this hilarious meltdown, the Cubs were 13th in bullpen era and that's with the 4 guys mentioned and you can include Motte too I guess: http://espn.go.com/mlb/stats/team/_/stat/pitching/split/128 Really. You're going to bullpen ERA as the measure of pen effectiveness.