His problem is...working DOWN in the zone too much lately. It sounds strange, because that's typically where you want a pitcher to work, but not Josh, he is FAR more effective when he works UP in the zone. His fast ball down=very hittable(especially for a lefty), his fastball up=UN hittable. You are like 10 years late with this, and it's not just Hader or 4 seam FB guys anymore. The long, looping, dip-your-back-shoulder style of hitting is in right now, making it very difficult to hit high pitches no matter if facing Zach Davies or Josh Hader. Also- the strike zone is now a few inches above the belt (unlike the years before statcast/pitchf/x). Now if you are Christian Yelich, who is the odd lefty with a level swing--these pitching trends are great for you as you have no trouble getting to the belt-to-letters fastball.