SoCal Underclass Games Trackman Files: Fastball


PBR California Staff

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SAN DIEGO, CALIF. - The SoCal Underclass Games was held on Saturday, September 24th at the University of San Diego. This event was an open event that consisted of prospects from the 2025-2027 classes. These players went through extended pro-style workout that included batting practice using Trackman and Blast Motion, participated in defensive evaluations, ran the 60 yard-dash using Swift Performance, and concluded with a simulated game. 

Pitchers were able to throw in simulated outings during gameplay and were able to get numbers and metrics off of our Trackman unit, such as pitch velocity, spin rate, horizontal & vertical movement & much more. There were some players who showed up and continued to build off of prior performances, but there were also some new names who jumped onto our radar with a strong showing.

Continuing off our post-event coverage for this event, we take a look back at some of the leaders from each statistical category recorded on the Trackman B1 unit. Please continue to check back over the next week, as we will release individual scouting reports on each player present at the event.

CLICK HERE FOR EVENT STATISTICS

Prep Baseball Report events across the country have been powered by TrackMan’s industry-leading portable system to capture pinpoint accurate, actionable data from player performances. Prep Baseball Report and TrackMan are dedicated to recognizing talent and unleashing their potential.

At the event all pitches were monitored through the portable Trackman B1 unit. Each player threw their complete arsenal of pitches allowing us to collect metrics such as release velocity, spin rate, vertical & horizontal movement and much more.

This data goes directly into the player profiles allowing the PBR Staff, college coaches and professional scouts alike to evaluate and compare prospects on a national scale.

CATEGORICAL LEADERS FOR FASTBALLS THROWN

Max Fastball Velocity: This metric calculates the speed of the pitch as it’s released from the pitcher’s hand.

Rank Name State School Class Pos Velocity (max)
1 Grayson Boles CA St Augustine 2025 1B 90.0 mph
2 Paul Dominguez CA La Mirada 2025 RHP 87.2 mph
3 Christopher Romo CA Eleanor Roosevelt 2025 3B 86.6 mph
4 Gavin Flores CA JSerra 2025 RHP 85.8 mph
5 Diego Gonzalez CA El Dorado 2025 SS 85.4 mph
6 Thomas Gonzales CA JSerra Catholic 2025 RHP 85.3 mph
7 Charlie Orman CA El Camino 2025 SS 83.9 mph
8 Max Snakenborg CA San Marcos 2026 3B 83.3 mph
9 Cole Clark CA Huntington Beach 2025 SS 83.2 mph
10 Jack Gerardi CA Santa Fe Christian 2025 RHP 82.7 mph

Fastball Spin Rate: This metric calculates the rate of spin on the baseball as it leaves the pitcher’s hand, measured in revolutions per minute (rpm). Historical data shows that high-spin fastballs lessen the impact of gravity, allowing for more ‘rise’ (or less fall, in other words) as it carries through the zone. Low-spin fastballs typically indicate the pitch has greater horizontal action, often making it tougher to square up, but generally easier to make contact with, leading to more ground balls, while high-spin fastballs show a correlation with swings and misses.

Rank Name State School Class Pos Spin Rate (max)
1 Gavin Flores CA JSerra 2025 RHP 2394 rpm
2 Diego Gonzalez CA El Dorado 2025 SS 2337 rpm
3 Cole Clark CA Huntington Beach 2025 SS 2325 rpm
4 Grayson Boles CA St Augustine 2025 1B 2261 rpm
5 Paul Dominguez CA La Mirada 2025 RHP 2225 rpm
6 Max Snakenborg CA San Marcos 2026 3B 2220 rpm
7 Jack Gerardi CA Santa Fe Christian 2025 RHP 2179 rpm
8 Thomas Gonzales CA JSerra Catholic 2025 RHP 2164 rpm
9 Charlie Orman CA El Camino 2025 SS 2163 rpm
10 Ashton Arroyo CA Marina 2025 RHP 2095 rpm

Fastball Horizontal Break: Horizontal movement is measured in inches between where the pitch actually crosses the front of home plate side-wise, and where it would have crossed home plate side-wise if had it traveled in a perfectly straight line from release. A positive number means the break was to the right from the pitcher’s perspective, while a negative number means the break was to the left from the pitcher’s perspective.”

Rank Name State School Class Pos HM (max)
1 Kane Garcia CA Huntington Beach 2027 1B -21.1 in
2 Ashton Arroyo CA Marina 2025 RHP 20.2 in
3 Grayson Boles CA St Augustine 2025 1B 18.5 in
4 Gavin Flores CA JSerra 2025 RHP 17.9 in
5 Christian Gastelum CA El Camino Real 2025 LHP -17.6 in
6 Paul Dominguez CA La Mirada 2025 RHP 17.0 in
7 Dorian Valencia III CA Citrus Valley 2027 OF -16.3 in
8 Brandon Thomas CA Mater Dei 2025 3B 16.1 in
9 Cole Clark CA Huntington Beach 2025 SS 16.0 in
10 Diego Gonzalez CA El Dorado 2025 SS 15.0 in

Fastball Induced Vertical Break: Distance, measured in inches, between where the pitch actually crosses the front of home plate height-wise, and where it would have crossed home plate height-wise if had it traveled in a perfectly straight line from release, but affected by gravity. If this number is positive, the ball broke “upwards”, or in reality dropped less than it would have due to gravity alone – it does not necessarily mean that the ball actually rose.

Rank Name State School Class Pos IVB (max)
1 Kane Garcia CA Huntington Beach 2027 1B 24.2 in
2 Owen Bone CA Huntington Beach 2026 OF 24.1 in
3 Dorian Valencia III CA Citrus Valley 2027 OF 22.6 in
4 Christian Gastelum CA El Camino Real 2025 LHP 21.9 in
5 Jack Gerardi CA Santa Fe Christian 2025 RHP 21.6 in
6 Thomas Gonzales CA JSerra Catholic 2025 RHP 21.2 in
7 Charlie Orman CA El Camino 2025 SS 21.2 in
8 Ashton Arroyo CA Marina 2025 RHP 21.0 in
9 Gavin Flores CA JSerra 2025 RHP 20.8 in
10 Christopher Romo CA Eleanor Roosevelt 2025 3B 20.1 in

UPCOMING EVENTS

SHOWCASE STATE DATE LOCATION
NorCal Uncommitted Games CA 10/09 McBean Stadium
SoCal Top Prospects Games (Invite-Only) CA 10/09 Great Park Stadium
SoCal Uncommitted Games CA 10/15 Fullerton College

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