Overall Efficiency Grade: 53/100

Mobility, Flexibility & Stability Screening

Evan falls into the “loose” mover category. We will have to make sure his loading pattern reflects this.

Pelvic isolation was limited. Vibration in anterior tilt shows lower back and core weakness. This will affect speed transfer up the chain.

Has some potential spine curvature so hips may be mis-aligned. Would explain more lateral shift to the right when turning the pelvis. Something that may be worth exploring with their training staff. Shifts to the right in his squatting action as well.

Thoracic mobility is near hyper-mobile stage. This is in all the categories of flexion, extension and rotation. Here is where the loading mechanism will be more important for him to make sure slack is removed from the core.   Also, has core instability which needs to be addressed with dynamic rotation/anti-rotation work in the weight room.

Scapular instability and weakness but shoulders are fine in internal and external rotation. 7 inches of scapular retraction is on the highest end of “neutral” before it enters “hyper-mobile.”

Hips are mobile except in right hip external rotation which was limited. I still think this goes back to his hips be mis-aligned. Leg strength and stability were excellent.

Force Plate Jumps

Evan is more explosive in the counter movement jump vs the squat-hold, jump. Squat jumps were at 105% body weight versus 95% BW on the squat-holds.   This would indicate an explosive rate of energy transfer for the swing.

Leg bias was inconsistent from jump to jump. Some jumps had a left leg bias that was up to 10% and some jumps had a minimal right leg bias. In either case, unilateral leg work needs to be a mainstay of the off-season plan.

Force Plate Swings

Below is video of the swing analysis. I will walk you through this matched up with video.

Z axis is pressure into the ground. I’m looking for 95% body weight or more in the back leg load. Although he lifts his leg in a “knee-tuck” style, he doesn’t compress into the ground very much. There is stabilization in your back leg, left on the table. Loading into toes right now versus mid-foot to heel. That will help get closer to 100% BW in the back leg.

Back leg torqueing was very good. Starting at 50Nm of torque in the beginning of your load and increasing over 60Nm into the stride. Holds and actually increases torqueing during the stride. 50Nm is what I shoot for, so he is above that already.

We want the front leg posting number to get to double of the back leg number. This is also another reason why we want a higher back leg number – it gives more potential output in the front leg as well. The front leg currently isn’t aggressive enough into extension. It gets to around 155% BW. Needs the feeling of punching the ground with the front heel to send energy up the chain more effectively. There is good pelvic action at the end of rotation.

X axis transfer numbers are how fast energy transfers from leg to leg. He holds a super slow advance (maybe too slow), but the leg to leg transfer speeds are outstanding.

KVEST Sequencing & Rotational Speeds

The 3d readings are on kinematic sequencing and rotational speeds.

Rotational speeds in the lower body ranged from 660-715 deg/sec. On the “real speed” scale that compares to other professional players, this speed grades as a Good (660 deg/sec) to Elite (715 deg/sec).

Torso speeds were from 870-970 deg/sec from trial to trial. This grades as “average” amongst professionals. So we have a disconnect here: Elite hip speed, but Average torso speed.

You can see from the graph picture, the lack of core and lead arm speed comes from the lack of stretch occurring through the core. Especially since he is hyper-mobile, the stretch factor is even more important. The scap load needs to be more pronounced and held longer to take the slack out of the core.

There was minimal transfer from core to lead arm in deg/sec. Most of the swings were about 100 deg/sec climb. I look for 250 deg/sec +.   Overall bat speed should be higher for the leg speed output that is shown.

Bat Sensor Data

Our DK sensor showed bat speeds of 60-62mph, which is below average for a professional. Attack angles to the ball were good, mostly all positive ranging from 4-11 degrees excluding the outliers.

Summary & Recommendations

• Get into a better heel load and compress back leg in loading mechanism to get better ground force.
• Improve front leg force – Overload front leg stabilization drills with both swings or med ball rotations will help this.
• Find an upper body loading mechanism that fits your mobility level. Loose movers are going to have more upper body action.
• Create tighter and faster turns w increased upper body resistance.