On Saturday, March 29, the Prep Baseball Ontario staff hosted it's second Scout Day of the spring season with the first half of the Ontario Blue Jays Scout Day at their home facility, The Athlete's Turf in Mississauga, Ontario. Friday's event featured over 60+ players from the Blue Jays program in the 2025 - 2029 classes as the arms got their bullpens in, following by a full workout for the catchers.

It was a talented group as we got a nearly every arm and catcher in the organization and we'll break it all down below, following by the second portion of the event this coming Thursday that will see all their infielders and outfielders run through a full workout.

Today we'll start our deep dive into the data collected at this event within this Statistical Analysis story as we take a look at the top TrackMan Pitching Data from the event. Following the positional event on Thursday, we will release full leaderboards that will include the catchers who participate at this event.

For complete event results, click here.

To view upcoming events, click here.
To view Class of 2025 Commitment Board, click here.

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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 RATE%

SLIDER

SPIN RATE (AVG.)

INDUCED VERTICAL BREAK (AVG.)

HORIZONTAL MOVEMENT (AVG.)

STRIKE ZONE %

CHANGEUP

HORIZONTAL MOVEMENT (AVG.)

STRIKE ZONE RATE%

UPCOMING EVENTS

Showcase	State	Date	Location
2025 Pitcher Only Future Games Trials	ON	04/12	Pro Teach Baseball
2025 Ontario Future Games Trials	ON	04/18	Athlete's Turf Inc.
2025 Ontario Future Games Trials II	ON	04/21	Athlete's Turf Inc.
2025 18U Best of the West	ON	04/30	Norbrock Stadium (Kamloops, BC)
2025 13U Best of the West	ON	05/01	Norbrock Stadium (Kamloops, BC)
2025 15U Best of the West	ON	05/01	Norbrock Stadium (Kamloops, BC)

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