Prep Baseball Report

Madison Preseason ID: Pitching Data Dive


Kevin Cronin
Illinois & Wisconsin Data Analyst, Area Scout

On March 10th, Prep Baseball Wisconsin hosted one of its largest events on the state’s showcase calendar: the Madison Preseason ID at GRB Academy in Windsor, Wis. Nearly 150 players from across the state met in the Madison area to participate in this event, a Preseason ID that consistently provides our staff with need-to-know names and players to consider for future invite-only events, like the PBR Future Games, among others.

Yesterday, we published our Statistical Analysis, where we broke down the stat leaders from the more traditional categories and our Quick Hits, where we dove into some of the top players from the event. Today, we will take a further in-depth look at the top pitchers with the help of our tech partnerships, broken down by the categories down below:

TRACKMAN

FASTBALL

VELOCITY (MAX)

Rank Name State School Class Pos Velocity (max)
1 Adam Urban WI Wauwatosa West 2025 RHP 91.8 mph
2 Jaxon Clayton WI Brookfield Central 2025 SS 90.2 mph
3 Mack Krause WI Neenah 2026 SS 88.2 mph
4 Casey Wambach WI Sun Prairie West 2025 SS 87.3 mph
5 Dylan Schreiber WI Waukesha West 2027 RHP 87.2 mph
6 Gavin Kanters WI Fort Atkinson 2025 OF 87.0 mph
7 Vincent Bitter WI Brookfield Central 2026 RHP 86.6 mph
8 William Baumhardt WI Slinger 2025 RHP 86.3 mph
9 Bron Schaefer WI Kaukauna 2026 LHP 85.9 mph
10 Peyton Kuehn WI Preble 2025 RHP 85.5 mph

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

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Jonathan Urban WI Wauwatosa West 2026 RHP 2484 rpm
2 Adam Urban WI Wauwatosa West 2025 RHP 2316 rpm
3 Luke Hurlebaus WI Waunakee 2025 RHP 2310 rpm
4 Noah Schaller WI Monona Grove 2025 RHP 2226 rpm
5 Hayden Anderson WI Mount Horeb 2026 RHP 2226 rpm
6 William Baumhardt WI Slinger 2025 RHP 2203 rpm
7 Carter Heroux WI Oconto Falls 2026 RHP 2194 rpm
8 Brady Stelzer WI Sun Prairie East 2026 RHP 2194 rpm
9 Connor Kletsch WI Watertown 2027 OF 2169 rpm
10 Casey Wambach WI Sun Prairie West 2025 SS 2165 rpm

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.)

Rank Name State School Class Pos IVB (avg)
1 Jackson Heidemann IL Harlem 2026 RHP 18.7 in
2 Thomas Wincek WI Middleton 2025 RHP 17.6 in
3 Pierson Bauer WI Kaukauna 2026 RHP 17.1 in
4 Luke Hurlebaus WI Waunakee 2025 RHP 16.9 in
5 Jaxon Prill WI West High 2025 OF 16.6 in
6 Mack Krause WI Neenah 2026 SS 16.4 in
7 Jaxon Clayton WI Brookfield Central 2025 SS 16.3 in
8 Levi Watts WI Appleton North 2025 OF 16.3 in
9 Jack Adler WI Oconto Falls High 2025 RHP 16.2 in
10 Casey Wambach WI Sun Prairie West 2025 SS 15.9 in

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.)

Rank Name State School Class Pos HM (avg)
1 Bron Schaefer WI Kaukauna 2026 LHP -16.3
2 Zane Seffrood WI Monroe High 2027 RHP 15.0
3 Kellen Mulcahy WI Vel Phillips Memorial 2025 RHP 14.3
4 Jaxon Prill WI West High 2025 OF -13.9
5 Tiernan Borchardt WI Marquette University 2027 SS 13.9
6 Eli Marble WI Wauwatosa East 2027 C 13.7
7 Eli Bauler WI Monona Grove 2027 RHP 13.4
8 Carter Heroux WI Oconto Falls 2026 RHP 13.3
9 JJ Rufer WI Verona Area High 2027 RHP 12.9
10 Chris Sippl WI Wittenberg-Birnamwood High 2025 RHP 12.8

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%

Rank Name State School Class Pos Zone %
1 Bentley Wagner WI Jefferson 2026 SS 85 %
2 Tanner Kalinowski WI Waukesha West 2025 RHP 83 %
^ Kaden Connor WI Monona Grove 2025 3B 83 %
3 Marty Hanna WI Sauk Prairie 2026 RHP 66 %
^ Oliver Corry WI Arrowhead 2027 SS 66 %
^ Gavin Stewart WI Badger 2025 LHP 66 %
^ Thomas Wincek WI Middleton 2025 RHP 66 %
^ Trevor Brouette WI Portage 2025 LHP 66 %
4 Casey Wambach WI Sun Prairie West 2025 SS 62 %
5 Mack Krause WI Neenah 2026 SS 60 %

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.)

Rank Name State School Class Pos Spin Rate (avg)
1 Jaxon Clayton WI Brookfield Central 2025 SS 2643 rpm
2 Mack Krause WI Neenah 2026 SS 2427 rpm
3 Brady Stelzer WI Sun Prairie East 2026 RHP 2361 rpm
4 Noah Schaller WI Monona Grove 2025 RHP 2273 rpm
5 Thomas Wincek WI Middleton 2025 RHP 2259 rpm
6 Carter Heroux WI Oconto Falls 2026 RHP 2249 rpm
7 Hayden Anderson WI Mount Horeb 2026 RHP 2223 rpm
8 Ashtyn Seifert WI Beaver Dam 2027 RHP 2202 rpm
9 Peyton Kuehn WI Preble 2025 RHP 2197 rpm
10 Bron Schaefer WI Kaukauna 2026 LHP 2191 rpm

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Peyton Kuehn WI Preble 2025 RHP -15.2 in
2 Jaxon Lettenberger WI Waukesha West 2027 LHP -13.2 in
3 Connor Kletsch WI Watertown 2027 OF -12.9 in
4 Jaxon Clayton WI Brookfield Central 2025 SS -12.2 in
5 Oliver Corry WI Arrowhead 2027 SS -12.0 in

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 William Baumhardt WI Slinger 2025 RHP -15.8
2 Bron Schaefer WI Kaukauna 2026 LHP 15.8
3 Evan Aigner WI Nathan Hale 2026 LHP 15.2
4 Hayden Anderson WI Mount Horeb 2026 RHP -14.0
5 Will Nikolay WI De Pere 2027 2B -12.2

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Evan Brown WI Waukesha West 2025 RHP 80 %
^ Oliver Corry WI Arrowhead 2027 SS 80 %
^ Austin Ebert WI Valders 2026 1B 80 %
^ Casey Wambach WI Sun Prairie West 2025 SS 80 %
2 Mack Krause WI Neenah 2026 SS 75 %
^ Brady Patten WI Verona Area 2025 1B 75 %
3 Isaac Poehlman WI De Pere 2025 1B 60 %
^ Alex Klun WI Sun Prairie 2025 2B 60 %
^ Tiernan Borchardt WI Marquette University 2027 SS 60 %
^ Kaden Connor WI Monona Grove 2025 3B 60 %
4 Gavin Stewart WI Badger 2025 LHP 50 %
^ Breckin Sheldon WI Tomah High 2026 RHP 50 %
^ Gavin Kanters WI Fort Atkinson 2025 OF 50 %
^ William Baumhardt WI Slinger 2025 RHP 50 %
^ Tanner Kalinowski WI Waukesha West 2025 RHP 50 %
^ Bron Schaefer WI Kaukauna 2026 LHP 50 %
^ Connor Kletsch WI Watertown 2027 OF 50 %


SLIDER

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Mack Krause WI Neenah 2026 SS 2583
2 Jaxon Clayton WI Brookfield Central 2025 SS 2512
3 Jonathan Urban WI Wauwatosa West 2026 RHP 2460
4 Brody Ison MI Escanaba Area 2027 RHP 2403
5 Peyton Kuehn WI Preble 2025 RHP 2357
6 Adam Urban WI Wauwatosa West 2025 RHP 2355
7 Vincent Bitter WI Brookfield Central 2026 RHP 2291
8 Bron Schaefer WI Kaukauna 2026 LHP 2290
9 Brady Ausen WI Craig 2027 OF 2249
10 Ashtyn Seifert WI Beaver Dam 2027 RHP 2245

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Peyton Kuehn WI Preble 2025 RHP -9.0 in
2 Joey Honerbaum WI Dodgeville High 2025 RHP -7.2 in
3 Gavin Kanters WI Fort Atkinson 2025 OF -6.1 in
4 Gavin Stewart WI Badger 2025 LHP 5.5 in
5 Luke Hurlebaus WI Waunakee 2025 RHP 5.2 in

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Adam Urban WI Wauwatosa West 2025 RHP -17.2
2 Evan Aigner WI Nathan Hale 2026 LHP 16.3
3 Paul Schmolinske WI Menasha High 2027 RHP -14.3
4 Jonathan Urban WI Wauwatosa West 2026 RHP -13.7
5 Gavin Kanters WI Fort Atkinson 2025 OF -13.7

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Brady Patten WI Verona Area 2025 1B 100 %
2 Chris Sippl WI Wittenberg-Birnamwood High 2025 RHP 80 %
^ Joey Honerbaum WI Dodgeville High 2025 RHP 80 %
^ Thomas Wincek WI Middleton 2025 RHP 80 %
3 Nolan Litkowiec WI Cudahy 2025 RHP 66 %
4 Tanner Kalinowski WI Waukesha West 2025 RHP 60 %


CHANGEUP

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Connor Kletsch WI Watertown 2027 OF 2184 rpm
2 Mack Krause WI Neenah 2026 SS 2175 rpm
3 Vincent Bitter WI Brookfield Central 2026 RHP 2103 rpm
4 Evan Aigner WI Nathan Hale 2026 LHP 2019 rpm
5 Tyler Loesche WI Slinger 2025 LHP 1999 rpm
6 Dylan Schreiber WI Waukesha West 2027 RHP 1895 rpm
7 Noah Schaller WI Monona Grove 2025 RHP 1889 rpm
8 Jonathan Urban WI Wauwatosa West 2026 RHP 1840 rpm
9 Joseph Tamboli WI Sun Prairie East 2026 LHP 1838 rpm
10 Brady Stelzer WI Sun Prairie East 2026 RHP 1816 rpm

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Pierson Bauer WI Kaukauna 2026 RHP 17.5 in
2 Alex Schoepp WI Edgewood 2026 SS 16.3 in
3 Ashtyn Seifert WI Beaver Dam 2027 RHP 15.9 in
4 Jackson Heidemann IL Harlem 2026 RHP 15.5 in
5 Peyton Kuehn WI Preble 2025 RHP 15.4 in
6 Noah Schaller WI Monona Grove 2025 RHP 14.8 in
7 Jaxon Prill WI West High 2025 OF 14.3 in
8 Eli Marble WI Wauwatosa East 2027 C 14.3 in
9 Braydan Frank WI Oshkosh North 2027 RHP 14.0 in
10 Luke Hurlebaus WI Waunakee 2025 RHP 14.0 in

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Chris Sippl WI Wittenberg-Birnamwood High 2025 RHP 17.1
2 Kellen Mulcahy WI Vel Phillips Memorial 2025 RHP 16.6
3 Tyler Loesche WI Slinger 2025 LHP -16.4
4 Breckin Sheldon WI Tomah High 2026 RHP 16.1
5 Trevor Brouette WI Portage 2025 LHP -16.0
6 Brady Stelzer WI Sun Prairie East 2026 RHP 15.7
7 Isaac Poehlman WI De Pere 2025 1B 15.4
8 Bron Schaefer WI Kaukauna 2026 LHP -15.1
9 Braydan Frank WI Oshkosh North 2027 RHP 15.1
10 Gavin Stewart WI Badger 2025 LHP -14.8

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Jackson Heidemann IL Harlem 2026 RHP 100 %
2 Eli Bauler WI Monona Grove 2027 RHP 80 %
3 Kellen Mulcahy WI Vel Phillips Memorial 2025 RHP 75 %
^ Brody Ison MI Escanaba Area 2027 RHP 75 %
^ Connor Kletsch WI Watertown 2027 OF 75 %
4 Bron Schaefer WI Kaukauna 2026 LHP 66 %
^ Oliver Dugas WI Madison East 2025 SS 66 %
^ JJ Rufer WI Verona Area High 2027 RHP 66 %
^ Evan Brown WI Waukesha West 2025 RHP 66 %
5 Eli Marble WI Wauwatosa East 2027 C 60 %
^ Pierson Bauer WI Kaukauna 2026 RHP 60 %

+ CLICK HERE for a look at the complete statistics from the event.

RELATED CONTENT