@johanndierker17 86
Velocity (max)
6/26/25
CLASS OF 2027
LHP
OF
Johann
Dierker
Hamilton Southeastern (HS) • IN
5' 11" • 190LBS
L/L • 17yr
Travel Team: BAM 2027 Signature
5' 11" • 190LBS
L/L • 17yr
Travel Team: BAM 2027 Signature
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
85 - 86
Velo Range
3/02/25
1851
Spin Rate (avg)
3/02/25
Changeup
79.4 - 81.5
Velo Range
3/02/25
1483
Spin Rate (avg)
3/02/25
Curveball
71.9 - 76.2
Velo Range
3/02/25
1697
Spin Rate (avg)
3/02/25
Slider
75 - 78
Velo Range
3/02/25
2024
Spin Rate (avg)
3/02/25
89.9
Exit Velocity (max)
3/02/25
87.3
Exit Velocity (avg)
3/02/25
327
Distance (max)
3/02/25
71
Sweet Spot %
3/02/25
23
Hand Speed (max)
2/17/24
74.2
Bat Speed (max)
2/17/24
18.3
Rot. Acc (max)
2/17/24
-
Hard Hit %
7.04
60-yd
3/02/25
3.88
30-yd
3/02/25
1.65
10-yd
3/02/25
19.4
Run speed (max)
3/02/25
64
INF Velo
3/18/23
87
OF Velo
3/02/25
-
C Velo
-
Pop Time
Positional Tools
2025
2024
2023
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Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
87.0
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.34
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
83.0
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.
11.7
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.54
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
64.0
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.
10.6
Hitting
2025
2024
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
89.9
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
87.3
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
327
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
235
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
22.3914
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).
85.7
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
57.1
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
277
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
112
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
36.391
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).
80.0
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
69.9
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
273
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
178
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
26.2548
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.
Preseason All-State: Underclass (Invite Only)
Mar 2, 2025
Trackman - Hitting
89.9
Exit Velocity (max)
87.3
Exit Velocity (avg)
235
Distance (avg)
327
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Bloomington Preseason ID
Feb 17, 2024
Trackman - Hitting
85.7
Exit Velocity (max)
57.1
Exit Velocity (avg)
112
Distance (avg)
277
Distance (max)
Sweet Spot %
Fly Ball %
Ground Ball %
North Side Rising Stars ID
Mar 18, 2023
Trackman - Hitting
80.0
Exit Velocity (max)
69.9
Exit Velocity (avg)
178
Distance (avg)
273
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2025
2024
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.9
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
67.3
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
65.7
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.
23.0
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
22.0
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
74.2
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
66.4
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.
Preseason All-State: Underclass (Invite Only)
Mar 2, 2025
Blast - Hitting
22.9
Hand Speed (max)
21.9
Hand Speed (avg)
67.3
Bat Speed (max)
65.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Bloomington Preseason ID
Feb 17, 2024
Blast - Hitting
23.0
Hand Speed (max)
22.0
Hand Speed (avg)
74.2
Bat Speed (max)
66.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2025
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
85.3
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).
1851
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.
21.7
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).
74.1
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).
1697
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).
80.5
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).
1483
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).
76.3
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).
2024
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
78.4
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
77.5
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).
1841
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.
23.8
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).
1602
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
71.3
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).
1881
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
68.6
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
67.6
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).
1563
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.
23.1
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).
58.6
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).
1665
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).
63.2
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).
1103
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).
61.2
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).
1547
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).
Preseason All-State: Underclass (Invite Only)
Mar 2, 2025
Trackman - Fastball
85.8
Velocity (max)
84.9 - 85.7
Velo Range
84.3
Eff Velocity (avg)
2,046
Spin Rate (max)
1,851
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
76.4
Velocity (max)
71.9 - 76.2
Velo Range
73.0
Eff Velocity (avg)
1,787
Spin Rate (max)
1,697
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
78.3
Velocity (max)
75.3 - 77.6
Velo Range
75.3
Eff Velocity (avg)
2,135
Spin Rate (max)
2,024
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
81.6
Velocity (max)
79.4 - 81.5
Velo Range
79.6
Eff Velocity (avg)
1,641
Spin Rate (max)
1,483
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Bloomington Preseason ID
Feb 17, 2024
Trackman - Fastball
78.4
Velocity (max)
76.8 - 78.2
Velo Range
76.5
Eff Velocity (avg)
1,981
Spin Rate (max)
1,841
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
69.7
Velocity (max)
68.6 - 69.4
Velo Range
68.0
Eff Velocity (avg)
1,785
Spin Rate (max)
1,602
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
71.9
Velocity (max)
70.8 - 71.9
Velo Range
69.0
Eff Velocity (avg)
1,881
Spin Rate (max)
1,881
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
North Side Rising Stars ID
Mar 18, 2023
Trackman - Fastball
68.6
Velocity (max)
66.8 - 68.4
Velo Range
64.3
Eff Velocity (avg)
1,674
Spin Rate (max)
1,563
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
59.3
Velocity (max)
57.8 - 59.3
Velo Range
55.4
Eff Velocity (avg)
1,732
Spin Rate (max)
1,665
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
61.5
Velocity (max)
60.7 - 61.5
Velo Range
58.2
Eff Velocity (avg)
1,625
Spin Rate (max)
1,547
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - ChangeUp
64.1
Velocity (max)
61.9 - 64.1
Velo Range
60.0
Eff Velocity (avg)
1,170
Spin Rate (max)
1,103
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
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
Curveball
Hammer+
A hammer breaking ball drops vertically with velocity through the zone, or 12-to-6 movement. Hammer+ of 100 is MLB average.
Curveball
Sweep+
A sweeping breaking ball moves horizontally with velocity through the zone. Sweep+ of 100 is MLB average.
Pitching Velos
2025
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
86.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
84.8
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
80.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
78.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
69.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
71.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
69.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
58.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
63.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
61.5
Game Performance
2023
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.
North Side Rising Stars ID
Mar 18, 2023
Swift
2.36
RSI (max)
2.36
RSI (avg)
985
Jump Power (max)
21.8
Jump Height (max)
21.8
Jump Height (avg)
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.65
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.88
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.04
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Vizual Edge
2025
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.
68.08
Pitch Ai
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Johann Dierker, Hamilton Southeastern HS (IN), 2027
Positional Profile: LHP/OF
Body: 5-10, 165-pounds. Athletic build
Delivery: Slow tempo, repeatable delivery. Moderate balance point with an athletic stride down the slope. Compact upper body with shoulders that work uphill down the slope. Shoulders land closed then quickly open up through the finish.
Arm Action: LH. Short arm action from a 3/4 slot.
FB: T78, 77-78 mph. Straight FB T1981, 1841 average rpm.
CB: 69-69 mph. Minimal drop T1785, 1602 average rpm.
SL: 71-72 mph. Developing T1881, 1881 average rpm.
ATH: 7.34 runner in the 60.
Johann Dierker, Hamilton Southeastern HS (IN), 2027
Positional Profile: LHP/OF
Body: 5-10, 165-pounds. Athletic build
Hit: LHH. Sets up in athletic, balanced stance. Toe tap stride with short but effective hand load. Repeatable stroke through the zone. Rotational athlete with quick hands 66.4 mph bat speed with 15 G's of rotational acceleration.
Power: 86 max exit velocity, averaged 57.1 mph. 277' max distance.
Arm: LH. OF-83 mph. Loose arm action from a 3/4 slot
Defense: Choppy footwork, soft hands, easy exchange,
ATH: 7.34 runner in the 60.