Prep Baseball Report

Fall Underclass Showcase: Pitching Analysis


By Rob Allison
Iowa State Director 

Prep Baseball Report Iowa held the Fall Underclass Showcase in W. Des Moines, IA  at WDM Valley High School on October 10th, 2014.  The event was for 2016 and 2017 graduates with Iowa and Wisconsin players represented. In our coverage we have broken down the prospects by their respective position.

Click here for complete event statistics.


Cal Stalzer, SS/RHP, WDM Valley, 2016
5-foot-10, 150-pound 2-way player. 7.44 60 time. Simple up to down delivery with balance and athleticism. Three pitches for strikes. Arm works well with above average extension to plate. Fastball shows late 2-seam action down in zone for strikes at 80-85 mph. Curveball has 11/5 shape with sharp break. Changeup is thrown near fastball arm speed with sink for strikes. Competes in bottom of zone with 3 pitches and above average command.

Michael Henter, RHP/1B, Waukee, 2017
6-foot-6, 215-pound 2-way player. 8.35 60 time. Very projectable prospect on mound with present pitchability. Controlled delivery with rhythm. Slight collapse at balance point. Loses some leverage and drive. Inline stride and lands closed to plate. Shoulder tilt on delivery with long clean arm circle. Throws 4 pitches for strikes consistently right now. Fastball was 77-78 at this event with heavy action down in zone. Two weeks previously 82-83 in game action. Curveball has 11/5 shape with late break and tight rotation. Advanced feel for changeup. Comes out of hand very easy to spots. Split is average pitch with wobbly flat action. Overall high follow for 2017. Very few pitchers his age and size show the ability he does to consistently repeat mechanics with ability to pitch. Velocity to come.

Brady Stover, LHP, Collins-Maxwell-Baxter, 2016
6-foot-1, 180-pound left-handed pitcher. Projectable body and arm. Simple controlled delivery on mound. Tends to land open; creating slingy action on pitches. Fastball comes out of hand easy with little effort. Fastball is downhill with life showing late run for strikes. 2/8 shape on breaking ball flat action. Changeup is thrown near fastball arm speed with sink. Shows ability to throw 3 pitches for strikes. Mechanics and breaking ball need to be cleaned up; but overall has high ceiling. Could be fast riser going to summer.

DeShawn Welch, RHP/2B, Indianola, 2016
6-foot-1, 175-pound 2-way player. 7.82 60 time. Projectable body on mound. Long legs. Will continue to add strength. Fastball is straight with downhill plane for strikes at 77-79 mph. Tends to wrap curveball early in delivery. 12/6 rotation with late breaking action at times. Changeup is thrown near fastball arm speed with sink for strikes. Not done growing. Has requisite ability to pitch. Interesting to see how body continues to develop and if velocity will translate.

Cory Koster, LHP/OF, Ankeny Centennial, 2016
5-foot-8, 155-pound 2-way player. 7.96 60 time. High leg kick to extended balance point. Lands open and in-line to catcher. Deceptive delivery. 2 piece arm action. Fastball has good run away from right-handed hitter with sink for strikes. Fastball was 77-80 mph. Throws a sweeping 2/8 curveball with early break. Changeup is quality pitch thrown near fastball arm speed with ASR for strikes. 6/6 on CH strikes.

Will Rodruck, RHP/3B, WDM Valley, 2017
5-foot-11, 190-pound 2-way player. 8.05 60 time. Balanced delivery with rhythm; arm works cleanly. Strides in-line and lands open. Throws mostly upper body with minimal extension and finish. Fastball was straight with decent velocity for 2017. 11/5 breaking ball with some power rotation. Erratic changeup command with toppling action thrown at near fastball arm speed.

Jonny Rozeboom, RHP/1B, Waukee, 2016
6-foot-3, 206-pound 2-way player. 7.56 60 time. Works primarily out of stretch. High leg kick, strides inline and closed with 2 piece arm action. Fastball is heavy with slight downhill plane for strikes at 76-80 mph. Wraps breaking ball early producing 12/6 rotation with late break. Arm slot fluctuates on changeup. Pitch is downhill with flat action at 68-70 mph.

Bobby Vanderlind, LHP/OF, Marion, 2016
6-foot, 155-pound 2-way player. 7.6 60 time. Long extended arm action on mound. Lands in-line and closed to plate. Throws strikes with fastball and changeup consistently. Fastball has downhill plane with ok tilt at times. Breaking ball has loose 1/7 rotation with early break. Changeup is clean; thrown near fastball arm speed with ASR for strikes.

Dylan Riley, SS/RHP, Sioux City East, 2016
6-foot-1, 170-pound 2-way player. 8.00 60 time. Good balance and direction in delivery. 2 piece arm action from over-the-top slot. Fastball was straight with occasional late run. Curveball had 12/6 shape with late break. Changeup was an above average offering with good fade for strikes.

Casey Boatwright, SS/RHP, Bondurant Farrar, 2016
5-foot-11, 150-pound 2-way player. 7.68 60 time. On the mound works primarily from the stretch. High leg kick with collapse at balance point. Fastball is straight and tended to be up in zone at 75-79 mph. Curveball showed 11/5 break and was inconsistent in zone. Changeup was 63-68 mph with slight sink and showed ability to keep down in zone.

Brett Herren, OF/RHP, Waukee, 2016
6-foot-1, 160-pound 2-way player. 7.69 60 time. Simple delivery on mound. Slight crouch at balance point. Lands slightly across body and closed. Minimal use of front side in delivery. Fastball jumps on hitter. Has some late life. Tended to be up in zone. Fastball was 74-77 mph. Curveball showed sharp break with 12/6 shape. Also was able to throw a fading changeup near fastball arm speed for strikes.

Caleb Kuennen, C/RHP, Johnston, 2017
5-foot-10, 155-pound 2-way player. 7.56 60 time. Simple delivery on mound. Arm works well. Lands in-line but open to plate. Fastball tended to miss arm side due to mechanics. Decent fastball life at 74-78 mph. Threw 12/6 breaking ball with early/gradual action. Changeup was near fastball arm speed for strikes.

Jonathan Luster, SS/RHP, Ballard, 2016
5-foot-9, 150-pound 2-way player. 8.13 60 time. Tuck and turn delivery on mound. Hides ball and creates deception. Fastball is downhill with late sink. Arm works cleanly on mound. Curveball shows 12/6 shape with early break. Changeup is thrown near fastball arm speed with slight fade for strikes. Interesting follow with bat.

Dylan Appenzeller, RHP/3B, Boone, 2017
5-foot-11, 180-pound 2-way player. 7.88 60 time. Fastball is straight with slight arm-side run. Breaking ball shows 12/6 shape with early break. Changeup is thrown near fastball arm speed with average fade for strikes.

Alex Mong, RHP, Cedar Falls, 2017
5-foot-11, 155-pound right-handed pitcher. Travels across rubber in delivery. High leg kick with one piece arm action to plate. Slight downhill plane on fastball with cutting action. 66-70mph. 12/6 curveball with early break at 50-53 mph. Changeup was 55-57 mph.


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