Prep Baseball Report

Hawaii Preseason Invitational: Pitching Data Dive


Cam Black-Araujo
Western Operations

This past weekend the Prep Baseball Hawaii staff openup the 2025 season with the inaugural Hawaii Preseason Invitational hosted at Central Oahu Regional Park, Hans L'Orange and Mililani High School. The event featured a full workout on Friday for all positional players, followed by a tournament throughout the weekend with the Hawaii Wood Bat Association - Team 2 taking home the championship.

This multi-day event featured over 100 players from Hawaii and California with all positional players participating in a full workout alongside our tech partners TrackMan, Blast Motion, VALD Performance and Vizual Edge.

Yesterday, we began our post-event coverage within our Statistical Analysis article, covering top performers across several different data points and metrics. Today, we'll continue our event coverage with a look at the top TrackMan Pitching data collected during gameplay over the weekend.

For complete event results, click here.


FASTBALL

MAX VELOCITY (MPH)

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

SPIN RATE (AVG)

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.

INDUCED VERTICAL BREAK (AVG.)

Induced Vertical Break: Used in short form as "IVB," this metric is most important on fastballs for creating rise and on curveballs for creating depth – it can also have some use when measuring sliders and cutters as well. Sliders tend to be closer to zero inches while cutters are generally between 5 and 15 inches. Usually fastballs and curveballs with large IVB have higher spin efficiencies as well. Sliders generally have very little (closer to zero) IVB and very low spin efficiency. You could also categorize IVB into spin rate as this is part of the “useful movement” you’re looking for. IVB is also a huge part of the vertical approach angle.

HORIZONTAL MOVEMENT (AVG.)

Horizontal Break: Outlined on TrackMan’s own website: “... 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.”

STRIKE ZONE %

CURVEBALL

SPIN RATE (AVG.)

INDUCED VERTICAL BREAK (AVG.)

HORIZONTAL MOVEMENT (AVG.)

STRIKE ZONE %

SLIDER

SPIN RATE (AVG.)

INDUCED VERTICAL BREAK (AVG.)

HORIZONTAL MOVEMENT (AVG.)

STRIKE ZONE %

CHANGEUP

HORIZONTAL MOVEMENT (AVG.)

STRIKE ZONE %


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