They are just not good enough to get to that pitch and if they get to it, more often than not they can't hit the spot.
So, can't get to it, meaning trying to get the count to 2 strikes they are bound to throw some suck ass pitch that JD just eats alive before they can get to the low and outside pitch....weak cheese is what JD mostly feeds on earlier in counts. Then there are the guys that just can't help but throw a Slider right over the heart and JD eats that stuff up too.
As bad as I have seen MLB pitching, expansion years, what have you, this is the worst MLB pitching across all pitchers all teams I have seen in my entire life and I am old as dirt!