92
Velocity (max)
7/25/24
CLASS OF 2026
RHP
1B
Aaron
Dierks
WEST SPRINGFIELD HIGH (HS) • VA
6' 3" • 210LBS
R/R • 17yr
Travel Team: Padres Scout 17U
6' 3" • 210LBS
R/R • 17yr
Travel Team: Padres Scout 17U
Rankings
2026 National
Rankings available to Premium Subscriber
2026 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
88 - 91.5
Velo Range
7/24/24
2360
Spin Rate (avg)
7/24/24
Changeup
86 - 86
Velo Range
7/25/24
1594
Spin Rate (avg)
2/11/24
Curveball
75 - 76
Velo Range
7/25/24
2714
Spin Rate (avg)
7/24/24
Slider
75.6 - 75.7
Velo Range
7/24/24
2640
Spin Rate (avg)
7/24/24
89.8
Exit Velocity (max)
6/18/24
84.4
Exit Velocity (avg)
6/18/24
316
Distance (max)
6/11/23
83
Sweet Spot %
2/11/24
20.8
Hand Speed (max)
6/18/24
67.7
Bat Speed (max)
6/18/24
11.3
Rot. Acc (max)
6/18/24
-
Hard Hit %
7.45
60
6/18/24
4.16
30-yd
6/18/24
1.79
10-yd
2/11/24
18.7
Run speed (max)
6/18/24
79
INF Velo
2/11/24
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2024
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.45
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.
12.1
Hitting
2024
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
89.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.0
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
296
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
200
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
20.1
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).
87.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.5
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
316
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
195
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
20.8
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.
2024 VA/DC State Games
Jun 18, 2024
Trackman - Hitting
89.8
Exit Velocity (max)
84.4
Exit Velocity (avg)
192
Distance (avg)
272
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2024 VA/DC Preseason All State Session II - NOVA
Feb 11, 2024
Trackman - Hitting
83.4
Exit Velocity (max)
78.7
Exit Velocity (avg)
205
Distance (avg)
296
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Scout Day: Stars Baseball
Jun 11, 2023
Trackman - Hitting
87.2
Exit Velocity (max)
81.5
Exit Velocity (avg)
195
Distance (avg)
316
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2024
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.8
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
17.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
67.7
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
62.1
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.
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
18.7
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
17.6
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
64.5
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
61.4
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.
2024 VA/DC State Games
Jun 18, 2024
Blast - Hitting
20.8
Hand Speed (max)
18.6
Hand Speed (avg)
67.7
Bat Speed (max)
64.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2024 VA/DC Preseason All State Session II - NOVA
Feb 11, 2024
Blast - Hitting
18.1
Hand Speed (max)
17.1
Hand Speed (avg)
63.8
Bat Speed (max)
59.5
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Scout Day: Stars Baseball
Jun 11, 2023
Blast - Hitting
18.7
Hand Speed (max)
17.6
Hand Speed (avg)
64.5
Bat Speed (max)
61.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
92.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
88.4
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).
2274
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.
25.7
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).
74.7
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).
2714
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).
81.5
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).
1476
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).
73.8
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).
2474
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).
Cutter
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
87.8
Cutter
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).
2198
Cutter
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
83.9
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.1
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).
2036
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.
24.5
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).
68.9
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).
2285
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).
78.5
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).
1109
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).
Future Games (Class of 2026/27)
Jul 24, 2024
Trackman - Fastball
92.0
Velocity (max)
88.0 - 91.5
Velo Range
88.4
Eff Velocity (avg)
2,508
Spin Rate (max)
2,360
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
75.5
Velocity (max)
74.1 - 75.3
Velo Range
72.6
Eff Velocity (avg)
2,815
Spin Rate (max)
2,714
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
75.7
Velocity (max)
75.6 - 75.7
Velo Range
74.0
Eff Velocity (avg)
2,701
Spin Rate (max)
2,640
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - ChangeUp
85.5
Velocity (max)
84.1
Eff Velocity (avg)
1,563
Spin Rate (max)
1,563
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
2024 VA/DC State Games
Jun 18, 2024
Trackman - Fastball
90.2
Velocity (max)
87.4 - 89.5
Velo Range
86.3
Eff Velocity (avg)
2,250
Spin Rate (max)
2,181
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Slider
75.0
Velocity (max)
73.0 - 74.8
Velo Range
71.8
Eff Velocity (avg)
2,659
Spin Rate (max)
2,454
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - ChangeUp
83.7
Velocity (max)
82.0 - 83.5
Velo Range
81.5
Eff Velocity (avg)
1,634
Spin Rate (max)
1,367
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Cutter
89.3
Velocity (max)
87.0 - 88.6
Velo Range
85.7
Eff Velocity (avg)
2,351
Spin Rate (max)
2,198
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2024 VA/DC Preseason All State Session II - NOVA
Feb 11, 2024
Trackman - Fastball
84.8
Velocity (max)
82.8 - 84.8
Velo Range
84.1
Eff Velocity (avg)
2,278
Spin Rate (max)
2,193
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Slider
72.5
Velocity (max)
71.5 - 72.5
Velo Range
70.9
Eff Velocity (avg)
2,486
Spin Rate (max)
2,425
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - ChangeUp
79.3
Velocity (max)
77.7 - 79.3
Velo Range
79.2
Eff Velocity (avg)
1,857
Spin Rate (max)
1,594
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Scout Day: Stars Baseball
Jun 11, 2023
Trackman - Fastball
83.9
Velocity (max)
82.2 - 83.9
Velo Range
83.0
Eff Velocity (avg)
2,197
Spin Rate (max)
2,036
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Curveball
69.3
Velocity (max)
68.7 - 69.2
Velo Range
67.8
Eff Velocity (avg)
2,365
Spin Rate (max)
2,285
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - ChangeUp
79.4
Velocity (max)
77.6 - 79.4
Velo Range
78.8
Eff Velocity (avg)
1,124
Spin Rate (max)
1,109
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Pitch Scores
2024
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.
Pitching Velos
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
90.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
86.2
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
80.5
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.2
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
88.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
83.3
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.8
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
75.8
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.0
Game Performance
2024
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.79
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.16
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.45
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
RSi
The reactive strength index measurement of an athlete's explosiveness by comparing their jump height to the ground contact time in between their jumps. On a scale of 0-5.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Visual Edge
2024
Edge Score
The highest Edge Score within the given year. Edge Score is a comprehensive score that takes the core-six visual skills into account, providing an assessment of an athlete’s overall visual ability.
83.9
Pitch Ai
Notes
News
- Future Games: Team Virginia Game 1 Quick Hits - Jul 26, 2024
- 2024 VA State Games Superlatives: Most Projectable Arms - Jun 28, 2024
- 2024 VA State Games Superlatives: Best Pitching Mix - Jun 25, 2024
- 2024 VA State Games Superlatives: Best Fastball - Jun 21, 2024
- PAS NOVA Superlatives: Most Projectable Arms - Feb 23, 2024
- PAS NOVA Superlatives: Best Mix - Feb 22, 2024
- PAS NOVA Superlatives: Best Fastball - Feb 21, 2024
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Positional Profile: RHP/1B
Body: 6-3, 205-pounds. Strong, physical frame.
Delivery: Stretch only delivery with normal effort.
Arm Action: RH. Short arm action from H 3/4 slot.
FB: T90, 87-90 mph. Fastball has riding life. T2250, 2181 average rpm.
SL: 73-75 mph. Slider has late depth. T2659, 2454 average rpm.
CH: 82-83 mph. Kills spin with the changeup. T1634, 1367 average rpm.
CUT: 87-89 mph. Cutter is firm with late movement.
ATH: 7.45 runner in the 60. 1.81 and 4.16 in the 10 and 30 yard splits.
Positional Profile: RHP/1B
Body: 6-3, 205-pounds. Strong, physical frame.
Hit: RHH. Active, balanced setup. Simple, uphill barrel path. 64.4 mph bat speed with 9 G's of rotational acceleration.
Power: 90 max exit velocity, averaged 84.4 mph. 272' max distance.
Arm: RH. INF-73 mph. Short, compact arm action.
Defense: Natural hands, with in control footwork.
ATH: 7.45 runner in the 60. 1.81 and 4.16 in the 10 and 30 yard splits.
Positional Profile: RHP/1B
Body: 6-3, 205-pounds. Lean, projectable frame.
Hit: RHH. Quiet, balanced setup. Simple, uphill barrel path. 59.5 mph bat speed with 7 G's of rotational acceleration.
Power: 83 max exit velocity, averaged 78.7 mph. 296' max distance.
Arm: RH. INF-79 mph. Short, compact arm action.
Defense: Consistent hands, with in control footwork.
ATH: 1.79 and 4.25 in the 10 and 30 yard splits. 23.60 max vertical.
Positional Profile: RHP/1B
Body: 6-3, 205-pounds. Lean, projectable frame.
Delivery: Stretch only delivery with some effort.
Arm Action: RH. Short arm action from H 3/4 slot.
FB: T85, 83-85 mph. Fastball has late life. T2278, 2193 average rpm.
SL: 72-73 mph. T2486, 2425 average rpm.
CH: 78-79 mph. T1857, 1594 average rpm.
ATH: 1.79 and 4.25 in the 10 and 30 yard splits. 23.60 max vertical.