Inland Empire Rising Stars ID: Data Dives
April 3, 2025
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On Sunday, March 30th the Prep Baseball California staff held the Inland Empire Rising Stars ID at Corona High School in Corona, CA. The event gave our staff an opportunity to look at some of the top rising stars prospects (2029-2030) in the state.
Over 30 prospects made their way to Corona High School to showcase their talents in a pro-style workout, which also included game-play.
Today, we will be looking at the top measurable data performers from the event, found below.
POSITIONAL
VALD
60-YARD
Traditionally, the 60-yard dash has been the in-event standard to help measure a player's speed tool. We implemented three timing gates at the 10 and 30 yards, to capture athletes’ quickness, explosiveness and reaction time. From there, we will calculate an athlete’s top-end speed in miles per hour.
TRACKMAN
We'll continue to roll out the data we gathered from this event, starting with the analytics we have at our disposal from our TrackMan units. Below we'll look at which players had noteworthy batted ball data.
EXIT VELOCITY (MAX)
EXIT VELOCITY (AVERAGE)
Exit Velocity: This metric measures the speed of the ball, measured in miles per hour, as it comes off the bat at the moment of contact.
Batted Ball (MAX)
Sweet Spot %
Sweet Spot percentage: This metric is determined by how often the player produces a batted ball during the session with a launch angle between 8 to 32 degrees.
PITCHERS
Trackman
We'll continue to roll out the data we gathered from this event, starting with the analytics we have at our disposal from our TrackMan units. Below we'll look at which players had noteworthy pitch data.
FASTBALL
VELOCITY (MAX)
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 efficiencies. 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 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 RATE%
Average MLB pitchers throw 62% strikes, and better pitchers throw strikes 65% of the time, or roughly 2:1 strikes to balls.
CURVEBALL
SPIN RATE (AVG.)
INDUCED VERTICAL BREAK (AVG.)
HORIZONTAL MOVEMENT (AVG.)
STRIKE ZONE RATE%
SLIDER
SPIN RATE (AVG.)
INDUCED VERTICAL BREAK (AVG.)
HORIZONTAL MOVEMENT (AVG.)
STRIKE ZONE RATE%
CHANGEUP
Spin Rate (AVG.)
INDUCED VERTICAL BREAK (AVG.)
HORIZONTAL MOVEMENT (AVG.)
STRIKE ZONE RATE%
+ CLICK HERE for a look at the complete statistics from the event.