Overall Efficiency Grade: 66.75

Mobility, Flexibility & Stability Screening

Jimmy is a “tight” mover. He has 15 degrees of rotation to the right and 15 degrees to the left. He’ll have a small upper body move that coincides with this. His scapular retraction is “tight.” He has 3.5 inches of retraction in both scaps. He is “neutral” in internal hip rotation and “neutral” in external hip rotation.   His core is stable, which will factor into his energy transfer.

Force Plate Jumps

Jimmy is balanced leg to leg. Counter movement jumps were nearly equal to squat-pause jumps. CMJ had a lift off force at 278% BW while SJ were 265% BW. This gives him some flexibility in choosing a loading style.

Force Plate Swings

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

Jimmy loads into the ball of his foot and creates ample leg loading force at 96% BW. Front leg force is good at 185% BW on the vertical axis. His preferred method of speed creation is horizontal and torque force.

Back leg torque numbers are right at where we want them at 45 Nm. Leg to leg transfer rates were better against velocity – shown by his x-axis timing numbers. He creates near 100% BW in horizontal force which is super high. If he can do that while maintaining back leg force into the turn, it can be a powerful style. He creates 140 Nm of torque force. Through his 3d data, we can get some more speed out of him through tighter sequencing.

KVEST Sequencing & Rotational Speeds

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

Jimmy is in sequence, and the graph above is a good example and one we are trying to make consistent. Most of his graphs, he slightly short changed his scap load which limited his lead arm transfer. Hip speeds are “fair” on the “Real Speed” scale at 650 deg/sec. Torso values gain but still are low because the hip speed was low. Torso speeds are “fair,” at 900 deg/sec and can be improved tightening the core with a bigger scap load. Lead arm values get inconsistent climbs, but max out above 1250 deg/sec. which is good. Wrist values are high at over 2000 deg/sec.

Bat Sensor Data

DK wasn’t working so I used a Blast sensor. Bat speeds were above average at 73-76 mph (keep in mind Blast is usually 5 mph faster than a DK sensor).   Time to impact numbers were “elite” at 135 milliseconds. Bat attack angles were inconsistent from 0-22 degrees.  From the graph below, he starts fairly flat, but cuts up out of the zone. It looks like he feels like he needs a high finish, so he manually lifts his bat up quickly out of the zone. He has a flatter path to start and needs to maintain that arc without manually manipulating his hands.

Summary & Recommendation

• Get a consistent scap load.

• Get consistent in maintaining connection to the ground with back shoe into the turn.

• Maintain the arc of the swing through the finish of the arc.

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