I came across this picture of Cressey Sports Performance athlete Corey Kluber on the Cleveland Indians Instagram feed the other day, and it reminded me to write this blog that I've had on my mind for quite some time.
It's not an exactly perfect measure, but a vertical shin on the push-off leg during the pitching delivery is a pretty good indicator of pitchers having good direction to the plate.
When the knee drifts forward over the toes, it's a pretty good sign that hip loading isn't optimal in the sagittal plane (hip flexion). Rather, the pitcher is "dumping" into the quad on the support leg. Additionally, unless you have really good ankle mobility (into dorsiflexion) it's hard to preserve a large base of support (i.e., the entire foot) through which you can apply force to the ground. The more the knee drifts forward, the more likely the heel is to come up off the ground.
Corey is a great example of a vertical shin, and it's particularly impressive because he has quite a bit of extra "coil" in his leg lift, which can often make pitchers spin out of the hip and get rotational early. His ability to load back into hip flexion and apply force into the ground improves his direction to the plate and, in turn, his consistency and command (only 34 walks in 215 innings last year).
Some great pitchers - Chris Sale and Jake Arrieta, for instance - will sacrifice good direction to the plate in order to optimize deception and/or stuff. In spite of the fact that they don't preserve heel contact along the rubber quite as long, they still preserve stability long enough into the delivery to make it work. You'll also notice these pitchers use their glove sides and "aggressive" stiffness into the front leg to bring them back on line. It's a higher maintenance delivery, but it can still be nasty. And, chances are that the success will be more related to the stuff than pristine command.
My feeling is that with young pitchers, we want to coach to improve direction. They don't have a body of work to support the legitimacy of putting themselves into bad positions. This is where good footwork and intent during catch play is so imperative; it's where they hammer home direction and learn to load into the hip instead of drifting into the knee. Long-time Cressey Sports Performance athlete Tim Collins might be the best I've ever seen in this regard, and this is one reason why he's pitched in the mid-90s at a height of 5-7 throughout his pro career.
In more advanced pitchers, you have to ask whether they've a) had success and b) stayed healthy. If the answer to both these questions is "yes," then my feeling is that you leave the direction alone and instead focus on taking care of optimizing their physical preparation.
As example, a pitcher with a less vertical shin and more closed off delivery will need more hip internal rotation, thoracic rotation, and scapular upward rotation to get to consistently throw to the glove side. And if they can't do these things well, they'll often rip off accidental cutters to the glove side, have balls run back over the plate, or just sail fastballs up and armside.
Last, but not least, my business partner (and CSP pitching coordinator) Brian Kaplan made a really good point recently: pitch "tunneling" is generally going to be significantly better for pitchers who have better direction. It makes sense, as less moving parts equates to more consistent vertical and horizontal release points, and a more direct delivery to the plate likely makes it harder for hitters to gauge depth (even if they are likely sacrificing some deception). If there is one thing our Major League hitters have told me about facing Kluber, it's that everything looks exactly the same until the split-second.
So, long story short, you can't separate direction from pitch design and physical preparation; they all work together. And if you're looking for a good measure of direction, vertical shin (or something close to it) is a pretty good place to start.
If you're looking to learn more about how we assess, program, and coach pitchers - both in terms of strength and conditioning and mechanics - - you won't want to miss our Elite Baseball Mentorship Upper Extremity course. Our next offering will take place at our Hudson, MA location on June 23-25. You can learn more HERE.
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