Underclass Trials: Blast Motion Board


Diego Solares
Staff Writer, Associate Scout

On Wednesday, June 23, the PBR Wisconsin staff hosted the Underclass Trials, our first showcase of the summer in the Badger State and an annual staple on our calendar. This open event served as an identifier to all members of high school classes 2023-25, serving as an up-close look for future invite-only events, like the PBR Future Games, among others.

Earlier today we published our TrackMan findings, and we published the traditional stats leaderboard earlier in the week with added analysis on more of the event's top performers.

Today, with the help of our Blast Motion sensors, we're analyzing the swing metrics measured at this open event.

HAND SPEED (PEAK & AVERAGE)

Rank Name State School Class Pos Hand Speed (max)
1 Griffin Bowers WI Homestead 2024 C 25.90 mph
2 Leo Weist WI Union Grove 2025 C 25.60 mph
3 Easton Harris WI Middleton 2025 LHP 25.10 mph
4 Sawyer Deering WI Kimberly 2025 RHP 24.80 mph
5 Luke Heinkel WI Brookfield East 2023 OF 24.40 mph
6 Brandon Bates WI Seymour 2024 3B 24.20 mph
7 D'Angelo Rivera WI Waukesha North 2024 1B 23.50 mph
8 Logan Forray WI Oak Creek 2025 C 23.20 mph
9 Charlie Slawinski WI Brookfield East 2025 SS 23.10 mph
10 Drew Van Oss WI West de Pere 2024 OF 23.00 mph
^ Cal Adamczyk WI Tremper 2023 OF 23.00 mph

Rank Name State School Class Pos Hand Speed (avg)
1 Sawyer Deering WI Kimberly 2025 RHP 23.71 mph
2 Leo Weist WI Union Grove 2025 C 23.58 mph
3 Luke Heinkel WI Brookfield East 2023 OF 22.89 mph
4 Griffin Bowers WI Homestead 2024 C 22.86 mph
5 Easton Harris WI Middleton 2025 LHP 22.48 mph
6 D'Angelo Rivera WI Waukesha North 2024 1B 22.05 mph
7 Charlie Slawinski WI Brookfield East 2025 SS 22.04 mph
8 Brandon Bates WI Seymour 2024 3B 21.97 mph
9 Landon Dessart WI Union Grove 2024 RHP 21.97 mph
10 Drew Van Oss WI West de Pere 2024 OF 21.95 mph

Peak Hand Speed: The observed maximum speed as measured on the handle of the bat (measured six inches from the knob of the bat). Peak Hand Speed will occur prior to the moment of impact, very close to the commit time in the swing when the wrists unhinge.

BAT SPEED (AVERAGE)

Rank Name State School Class Pos Bat Speed (avg)
1 D'Angelo Rivera WI Waukesha North 2024 1B 73.47 mph
2 Landon Dessart WI Union Grove 2024 RHP 71.26 mph
3 Luke Heinkel WI Brookfield East 2023 OF 70.79 mph
4 Zachary Kiffmeyer WI Oshkosh North 2025 C 69.04 mph
5 Easton Harris WI Middleton 2025 LHP 68.46 mph
6 Eli Becker WI Homestead 2024 C 68.27 mph

Bat Speed: The observed speed of the sweet spot of the bat at impact. The sweet spot of the bat is measured six inches from the tip of the bat.

ROTATIONAL ACCELERATION (PEAK & AVERAGE)

Rank Name State School Class Pos Rot. Acc (max)
1 Sawyer Deering WI Kimberly 2025 RHP 28.40 g
2 Brandon Bates WI Seymour 2024 3B 25.30 g
3 Luke Heinkel WI Brookfield East 2023 OF 23.70 g
4 Zachary Kiffmeyer WI Oshkosh North 2025 C 23.20 g
5 Johnny Leaver WI La Crosse Logan 2024 OF 22.70 g
6 Leo Weist WI Union Grove 2025 C 21.90 g
7 Vince Cameranesi WI Grafton 2023 C 21.60 g
8 Alex Griswold WI Wisconsin Virtual Academy 2024 C 20.80 g
9 Johnnie Brown III WI Brookfield East 2025 OF 20.70 g
10 Caden Koeppendoerfer WI South Milwaukee 2024 SS 19.80 g

Rank Name State School Class Pos Rot. Acc (avg)
1 Sawyer Deering WI Kimberly 2025 RHP 24.28 g
2 Luke Heinkel WI Brookfield East 2023 OF 22.00 g
3 Brandon Bates WI Seymour 2024 3B 21.56 g
4 Johnny Leaver WI La Crosse Logan 2024 OF 19.91 g
5 Zachary Kiffmeyer WI Oshkosh North 2025 C 18.10 g

Body Rotation: A swing that has the appropriate relative contributions of body and bat rotations is an efficient and Powerful swing that maintains proper sequencing. An efficient baseball swing is one in which the body creates the initial movements, which is then transferred to the arms and out to the bat, thereby maximizing Bat Speed through this proximal-to-distal kinematic sequencing movement pattern.

For a complete look at each of the statistics measured at this showcase, CLICK HERE.

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