Prep Baseball Report

TPG Underclass: TrackMan Pitching Metrics


Brandon Hall
NC / Mid-ATL Director of Scouting

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Prep Baseball was at McCrary Park in Asheboro, NC on Saturday November 2nd and Sunday November 3rd for the Fall Top Prospect Games.  Saturday featured the Underclass event, with players from the 2027 and 2028 classes.  Sunday the 2025 and 2026 grads participated in the Upperclass event.  Designed for top uncommitted players in North Carolina, there was plenty of talent on hand for each day of the event.

Players opened their day with body measurements, grip strength testing, jump tests, and their offensive workout.  Defensive workouts were next, with players working out at the positions of their choice, giving scouts a chance to see their movement, arm action, arm strength, and feel for the glove. Players followed their defensive testing with a laser timed 60 yard dash.  VALD Performance lasers were used to capture the 60 time, plus a 10yd and 30yd split.  

Following the workout, players took part in a controlled scrimmage with pitchers facing live hitters.  As the game concluded a "machine" scrimmage gave the hitters more at-bats and position players a ton of defensive reps.  Prep Baseball scouts were on hand and will be reporting on player performance throughout November, and into the spring season.

The roster from the Top Prospect Games: Underclass and all of the stats can be seen HERE.

The roster from the Top Prospect Games: Upperclass and all of the stats can be seen HERE.

Below we dive into the players, numbers, and analytics from the Saturday event, the Top Prospect Games: Underclass.

Top Prospect Games: Underclass - TrackMan Pitching Analytics

FASTBALL STATS

Peak Velocity


Average Effective Velocity

Effective velocity is taking into account the velocity of each pitch, its release distance, the pitches time to the plate / hitting area, and the pitches movement.  With all of this information, Effective Velocity is allowing coaches and scouts to more accurately compare how a pitch is affecting a hitter.


Peak Spin Rate


Average Spin Rate


Average Induced Vertical Movement

Induced vertical movement tracks how the ball rides through the zone, or sinks through the zone.  For the purpose of this board we are tracking which fastballs showed the most ride, typically leading to more swing and miss opportunities


Average Horizontal Movement

Horizontal movement is often referred to as run.  This measurement does not distinguish between early and late movement, just the overall amount the ball tracks to the arm side out of the hand.


Peak Spin Score

The Spin Score is a measurement linking velocity and spin.  It is calculated by dividing the spin rate by the velocity of each pitch.  


CURVEBALL STATS

Peak Velocity


Peak Spin Rate


Average Spin Rate


Average Induced Vertical Movement

This is a measurement of how much the ball drops from its original position and trajectory.  It does not measure how late the movement happens.  This can be referred to as depth on a breaking ball.


Average Horizontal Movement


Peak Spin Score


SLIDER STATS

Peak Velocity


Peak Spin Rate


Average Spin Rate

Average Horizontal Movement


Peak Spin Score

CHANGEUP STATS

Peak Velocity


Average Induced Vertical Movement


Average Horizontal Movement

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