Like a lot of young pitchers I’ve observed in the last year, my son throws a lot with his arm. Over the winter and early spring, we worked on incorporating the lower body and generating early momentum using some step behind drills, the Hershiser drill, leading with the hip, etc.
His lower body momentum has improved (based on his size and genetics, I don’t think he’ll ever be “quick” to home plate), but he still throws with a lot of arm. While before he had almost no lower body momentum, now it seems that his lower body and torso are leaving his arm behind.
I’ve been re-reading some House/NPA material (Pitching Edge, Art & Science of Pitching) and it struck me that maybe the issue at this point isn’t lack of momentum, but the timing of his shoulder rotation. Maybe later shoulder rotation would help recruit some of the lower body momentum and reduce what looks to me like a dragging arm.
Does this make sense or am I going in the wrong direction? If I’m on the right path, are there any drills for delaying shoulder rotation? Any verbal cues that I could use? Thanks.