Mind sharing those Wolforth drills you did? I have The Combat Pitcher…
Trying to determine how much my son is getting from his hips/legs.
Velocity up one week, down the next… Playing Rec basketball can’t be good for your fastball.
Gladly, although some of the drills require some special equipment and setup. I will share some drills that can be done with more common equipment. However, without any video of your son pitching, I can’t be sure what the problem is with his lower or upper body.
All of the following drills are done with a medicine ball (not sure on your son’s age, but my college uses 6-8 lb medicine balls) and a wall that you can throw the medicine ball against. These drills help with getting a feel for using your lower body to drive towards the plate.
1st drill: Start in the position right after your front foot lands. Your son should have a long stride with his weight on his front leg and his front shin behind his front foot. His torso should be behind his front leg (stacked vertically). Take the medicine ball in both hands over the head. Stretch backwards with your upper torso while keeping your weight on your front foot (this is important!). When he feels a stretch, snap your torso forward and throw the ball against the wall. His front leg should remain stable throughout the throw because his weight is on his front foot.
2nd drill: Start in the same position as drill 1. Take the medicine ball in both hands and reach the ball towards the ground to his pitching arm side. Take a large circle with the medicine ball simulating his arm action when hes throwing. At the end of his arm action, the medicine ball should be over his head. At this exact moment, your son should shift his weight to his front foot (make sure his torso is stacked still and his front shin is behind his front foot) and throw the medicine ball in the same fashion as the 1st drill. His front leg should remain stable throughout the throw because his weight is on his front foot.
3rd drill: This drill is the hardest to perform and it may take awhile to get a hang of it. Start 30ish feet from the wall. Get a running start towards the wall with the medicine ball in both of your hands in front of you. When you are about 15 feet away from the wall, jump up with your drive leg (not the front leg) and take a long stride towards the wall (like you are crow-hopping from the outfield. Your son should shift his weight onto his front foot BEFORE landing with his front leg while remaining upright with his torso. The medicine ball should be held above his head when he begins his crow-hop, and when his front leg lands, he should throw the ball at the wall just like Drills 1 and 2. His front leg should remain stable throughout the drill because his weight is on his front foot.
These drills are just a portion of the drills Wolforth teaches. We use these in junction with many others to improve our mechanics. If you want a more comprehensive look, upload a video of your son's mechanics would be helpful. There are many people on this site would could give you some suggestions for improvement.