Today’s guest post comes from Cressey Sports Performance – MA pitching coordinator, Christian Wonders.

While it’s good to know little adjustment of mechanics in a delivery, most pitchers struggle with a few bigger rocks that need to be addressed. One of them that needs attention is rib cage position throughout the throwing motion.

Next to the lower half, the rib cage is probably the most important part of a pitching delivery. It is at the center of the body, and serves as a platform for the shoulder blades to move upon, which in turn, dictates where the hand will be at ball release.

If you take in a large breath, you’ll realize that your thorax expands, and the opposite occurs when you blow out all your air. For this article, we will call the expansion of your rib cage inhalation/ external rotation, and the opposite exhalation/ internal rotation.

Often, we will see pitchers stuck in a state of inhalation bilaterally, where you can see the bottom of the rib cage popping through the skin. Along with this postural presentation comes an anterior (forward) weight shift, poor anterior core control, scapular depression and downward rotation, and even the possibility of a flat/extended thoracic spine.

From a pitching standpoint, the thorax is the center of the body, and is responsible for transferring force, along with assisting the thoracic spine (upper back) in delivering the scapula. When a pitcher presents an extended posture with an inability to control rib cage and pelvic position, it’s hard to make an efficient rotation at front foot strike, while still holding his line to home plate. The outcome is usually misses up in the zone, along with an inability to throw a sharp breaking ball (hanging curveball/backup slider.)

Furthermore, the anterior weight shift can create a quad dominant loading pattern of the back leg, which will feed into a pitcher stepping more across his body, and ruining the pitcher’s direction to the plate. I’m not saying that a pitcher stepping across his body is the worst thing in the world, but they must possess enough core stability, lead leg internal rotation, and thoracic flexion in order to get to a good position at ball release.

So now, the question becomes: how do I stop this from happening?

– Flexion-bias breathing drills to decrease extensor tone

– Anterior core control exercises like prone bridges, rollouts, fallouts, etc.

– Soft tissue work on accessory breathing muscles, lats, intercostals, etc.

– Educating the athlete to not feed into the pattern by standing/sitting/training in bad patterns

– Drills to drive scapular upward rotation, particularly by prioritizing serratus anterior

– Coaching

Coaching is last on the above list, because it’s by far the most important, and the challenge of coaching is figuring out what an individual needs to be consistent on the mound. If you’re looking for details on coaching positioning of the anterior core, I’d highly recommend Eric’s Understanding and Coaching the Anterior Core presentation. It’s a one hour presentation that hits on all the important points you need to understand on this front.

When it comes down to it, positioning of the ribcage can have a serious effect on arm action, extension at ball release, and even lower half mechanics. Therefore, I think it’s important to check the big boxes of pitching mechanics proximal (center) to the body, before moving distally (extremities) to drive the best results on consistency and performance.

Note from EC: Christian is one of the presenters in our Elite Baseball Mentorships. We’ll be offering our first one of 2019 on June 23-25 at Cressey Sports Performance – Massachusetts. For more information, head HERE.

About the Author

Christian Wonders (@CSP_Pitching) is the pitching coordinator coach at Cressey Sports Performance-MA. You can contact him by email at christian.wonders25@gmail.com and follow him on Instagram.