22.5
Hand Speed (max)
2/21/21
CLASS OF 2022
3B
RHP
David
Dielman
Marshall
Olentangy Liberty (HS) • OH
6' 1" • 190LBS
L/R • 19yr 9mo
Travel Team: Bo Jackson Elite
Olentangy Liberty (HS) • OH
6' 1" • 190LBS
L/R • 19yr 9mo
Travel Team: Bo Jackson Elite
Rankings
2022 National
Rankings available to Premium Subscriber
2022 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
82.6
Bat Speed (max)
8/10/21
18.1
Rot. Acc (max)
2/21/21
-
Hard Hit %
96.1
Exit Velocity (max)
8/10/21
88.8
Exit Velocity (avg)
8/10/21
312
Distance (max)
8/10/21
60
Sweet Spot %
6/29/20
7.11
60
8/10/21
-
30-yd
-
10-yd
-
Run speed (max)
86
INF Velo
2/21/21
-
OF Velo
-
C Velo
-
Pop Time
Fastball
87
Velocity (max)
2/21/21
5 - 87
Velo Range
2/21/21
2151
Spin Rate (avg)
2/21/21
Changeup
80 - 82
Velo Range
2/21/21
1789
Spin Rate (avg)
2/21/21
Curveball
71 - 74
Velo Range
6/30/21
2160
Spin Rate (avg)
2/21/21
Slider
75.5 - 77.1
Velo Range
2/21/21
2199
Spin Rate (avg)
2/21/21
Positional Tools
2021
2020
2019
Sign in to view rankings 
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.11
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
86.0
Power / Speed Score
A simple calculation that divides the athlete’s Exit Velocity Max by the athlete’s 60 Yard Dash time for the given event year. For example, 98 MPH / 7.00s = 14.00.
13.5
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.50
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
79.0
Power / Speed Score
A simple calculation that divides the athlete’s Exit Velocity Max by the athlete’s 60 Yard Dash time for the given event year. For example, 98 MPH / 7.00s = 14.00.
12.2
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.22
Home to First
The athlete's fastest home-to-first time in the given event year. Measured from bat-on-ball to foot-on-bag, in seconds (s).
4.83
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
75.0
Power / Speed Score
A simple calculation that divides the athlete’s Exit Velocity Max by the athlete’s 60 Yard Dash time for the given event year. For example, 98 MPH / 7.00s = 14.00.
8.9
Hitting
2021
2020
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
96.1
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
87.4
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
312
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
177
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
12.9
Hard Hit %
Percentage of batted balls with exit velocities over 95 MPH in the given event year.
Sweet Spot %
Percentage of batted balls in the given event year with a launch angle between 8° and 32°.
Line Drive %
Percentage of batted balls with launch angles between 10 and 25 degrees in the given event year.
Fly Ball %
Percentage of batted balls with launch angles between 25 and 50 degrees in the given event year.
Ground Ball %
Percentage of batted balls with launch angles below 10 degrees in the given event year.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
91.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
78.6
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
290
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
169
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
17.0
Hard Hit %
Percentage of batted balls with exit velocities over 95 MPH in the given event year.
Sweet Spot %
Percentage of batted balls in the given event year with a launch angle between 8° and 32°.
Line Drive %
Percentage of batted balls with launch angles between 10 and 25 degrees in the given event year.
Fly Ball %
Percentage of batted balls with launch angles between 25 and 50 degrees in the given event year.
Ground Ball %
Percentage of batted balls with launch angles below 10 degrees in the given event year.
2021 Northeast Senior Games
Aug 10, 2021
Trackman - Hitting
96.1
Exit Velocity (max)
88.8
Exit Velocity (avg)
230
Distance (avg)
312
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Scout Day: Bo Jackson Elite 2.21.21
Feb 21, 2021
Trackman - Hitting
91.1
Exit Velocity (max)
85.7
Exit Velocity (avg)
125
Distance (avg)
276
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Ground Ball %
2020 Central Ohio Prospect Games (Invite Only)
Jun 29, 2020
Trackman - Hitting
91.5
Exit Velocity (max)
78.6
Exit Velocity (avg)
169
Distance (avg)
290
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2021
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.5
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.7
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
82.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
68.4
Rotational Acceleration Max
The highest Rotational Acceleration of any swing in the given event year.
Rotational Acceleration Avg
The average Rotational Acceleration for all swings in the given event year.
On-Plane Efficiency Max
The highest On-Plane Efficiency of any swing in the given event year.
On-Plane Efficiency Avg
The average On-Plane Efficiency for all swings in the given event year.
2021 Northeast Senior Games
Aug 10, 2021
Blast - Hitting
22.4
Hand Speed (max)
21.5
Hand Speed (avg)
82.6
Bat Speed (max)
68.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Scout Day: Bo Jackson Elite 2.21.21
Feb 21, 2021
Blast - Hitting
22.5
Hand Speed (max)
22.0
Hand Speed (avg)
70.5
Bat Speed (max)
69.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2020 Central Ohio Prospect Games (Invite Only)
Jun 29, 2020
Blast - Hitting
20.9
Hand Speed (max)
20.3
Hand Speed (avg)
66.0
Bat Speed (max)
64.2
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
Pitching
2021
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
86.2
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.6
Fastball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
2040
Fastball
Spin Score Avg
The average Bauer Units value of all fastballs in the given event year. Bauer Units are calculated for each pitch by dividing Spin Rate by Velocity.
24.4
Fastball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
75.2
Curveball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
2160
Curveball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.6
Changeup
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
1647
Changeup
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
74.5
Slider
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
1979
Slider
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
2021 Northeast Senior Games
Aug 10, 2021
Trackman - Fastball
86.5
Velocity (max)
81.3 - 85.2
Velo Range
81.8
Eff Velocity (avg)
2,195
Spin Rate (max)
2,013
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
75.1
Velocity (max)
73.5 - 74.9
Velo Range
73.2
Eff Velocity (avg)
2,065
Spin Rate (max)
1,935
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
79.4
Velocity (max)
76.9 - 79.2
Velo Range
76.8
Eff Velocity (avg)
1,801
Spin Rate (max)
1,600
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Scout Day: Bo Jackson Elite 2.21.21
Feb 21, 2021
Trackman - Fastball
86.1
Velocity (max)
83.7 - 86.1
Velo Range
83.9
Eff Velocity (avg)
2,246
Spin Rate (max)
2,151
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
75.2
Velocity (max)
72.9
Eff Velocity (avg)
2,160
Spin Rate (max)
2,160
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
77.1
Velocity (max)
75.5 - 77.1
Velo Range
74.6
Eff Velocity (avg)
2,202
Spin Rate (max)
2,199
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
81.2
Velocity (max)
79.6 - 81.2
Velo Range
77.8
Eff Velocity (avg)
1,814
Spin Rate (max)
1,789
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
2021
Fastball
Hop+
A fastball with hop has a flat approach angle and visually jumps through the zone. When thrown up in the zone, it is more likely to generate a higher swing and miss average. Hop+ of 100 is MLB average.
Fastball
Sink+
A fastball with sink has low backspin and drops through the strike zone. When thrown down in the zone, it is more likely to generate a higher ground ball percentage and lower launch angle. Sink+ of 100 is MLB average.
Fastball
Rise+
A fastball with rise has a high percentage of backspin. When thrown up in the zone, it is more likely to generate a higher fly ball percentage. Rise+ of 100 is MLB average
Slider
Hammer+
A hammer breaking ball drops vertically with velocity through the zone, or 12-to-6 movement. Hammer+ of 100 is MLB average.
Slider
Sweep+
A sweeping breaking ball moves horizontally with velocity through the zone. Sweep+ of 100 is MLB average.
Scout Day: Bo Jackson Elite 2.21.21
Feb 21, 2021
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+
Pitch Scores - Slider
Hammer+
Sweep+
Pitching Velos
2021
2019
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.3
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
78.1
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.8
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
72.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
71.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
60.5
Game Performance
Visual Edge
Pitch Ai
Notes
News
- 2021 Scout Day: Bo Jackson Elite - Quick Hits - Mar 10, 2021
- Results From 2021 Scout Day: Bo Jackson Elite - Feb 22, 2021
- 2020 Central Ohio Top Prospect Games - Advanced Metrics w/Trackman and Blast Tech - Jul 21, 2020
- 2020 Central Ohio Top Prospect Games - Quick Hits - Jul 21, 2020
- Results From 2020 Central Ohio Top Prospect Games - Jul 15, 2020
- 2020 Central Ohio Prospect Games - Quick Hits - Jul 6, 2020
- 2020 Central Ohio Prospect Games - Advanced Metrics w/Trackman and Blast Tech - Jul 2, 2020
- Results From 2020 Central Ohio Prospect Games - Jul 1, 2020
- 2020 Scout Day: Bo Jackson Elite Sports - Quick Hits - Mar 6, 2020
- Results from 2020 Scout Day: Bo Jackson Elite Sports - Feb 24, 2020
- 2019 Central Ohio Fall Limited Series - Pitching Velocities - Sep 17, 2019
- 2019 Ohio Underclass Games I - Complete Evaluations - Jul 16, 2019
- Results from 2019 Ohio Underclass Games I - Jul 2, 2019
- 2019 Ohio Underclass Games I - Top Performers - Jul 2, 2019
- 2019 Scout Day: Bo Jackson Elite Sports - Complete Evaluations - Mar 28, 2019
- 2019 Scout Day: Bo Jackson Elite Sports - Top Performers - Feb 21, 2019
- 2019 Scout Day: Bo Jackson Elite Sports - Sneak Peek - Feb 21, 2019
- Results from 2019 Scout Day: Bo Jackson Elite Sports - Feb 20, 2019
Comments
Draft Reports
Contact
Premium Content Area
To unlock contact information, you need to purchase a ScoutPLUS subscription.
Purchase Subscription OR
Login
Obvious tools led by his 82.6mph batspeed. The lefty bat has a short, simple stroke that doesn't require much effort to generate impressive pop. All field direction with mostly true spin. A lot to work with here, 96mph top EV, solid round. Also proved the bat can translate in game, posting a .500 BA through 3 games with several loud barrels. Defensively, he’s a guy that can play multiple spots with a more than likely corner profile.
David Dielman: 3B/RHP, (2022) Olentangy Liberty, OH. 6-foot-1, 180-pound athletic frame. During batting practice, Dielman had an exit velocity of 91 mph. Started in an open athletic stance with a smooth quick load, then used a leg kick. Bat speed is above average and displays a level swing plane. Athletic in the infield, had a live arm with throws that topped out at 86 mph; has athletic developing feet, a clean exchange, and soft hands. Fields the ball out front, movements laterally were athletic. In the 60-yard dash, he clocked a time of 7.38. Projectable on the mound, showing quick arm speed he used a quick arm action with a ¾ arm angle. Drop-and-drive type pitcher and shows easy effort. Has an athletic balance point. Sat with his fastball at 85-87 mph; showed arm side control and running action. His changeup (80-82) has arm side command and fading action. Shows a 11/5 slider (74-77) with plus action.
Hit:Left-handed hitter that starts in an athletic setup. Love the movements in the box. Functionally athletic dude who can get things going in a hurry. Very solid round, taking what the pitch gives him and spraying it around the yard.
Power:Gap abilities.
Offensive Projection:Run producer.
Max BP Exit Velocity:92 mph
Max BP Distance: 289 ft
Field:In the infield he plays fluid actions and feel for his feet. Does a nice job of maintaining rhythm throughout. Quick first step.
Throw:Clean arm with more to come.
Defensive Projection: Left side of infield.
2/23/20 Position Player
Hit: Left handed hitter. Balanced set up in the box. Utilizes a leg kick with a smoother, athletic loading sequence. Level bat path through the zone, while possessing backspin abilities.
Power: 79 exit velocity. Line drive pop
Offensive Projection: Table setter
Field: Worked as a 3B. Athletic with good footwork and soft hands.
Throw: 75 mph INF velo. Arm will improve with added strength to frame.
Defensive Projection: MIF
Body Type: 5-foot-11, 155-pound athletic frame.
Swing Mechanics: Open stance with a smooth and simple load into his lower half that syncs up well with his hands.
Hit: Level bat path that works to the middle part of the field with backspin.
Power: Line drive guy right now. Top exit velocity during BP was 77 mph.
Offensive Projection: Top of the lineup guy.
Field: In the infield he moves light on his feet, taking direct routes off the bat. Hands are soft and transfer is very smooth. Athletic, rangy defender.
Throw: ¾ right-hander with slinging arm action. More strength to come.
Defensive Projection: MIF.