@JackLerstang 20.6
Hand Speed (max)
2/08/26
CLASS OF 2027
OF
LHP
Jack
Lerstang
Greenville Academy (HS) • SC
5' 10" • 149LBS
S/L • 17yr 5mo
Travel Team: Diamond Devils - 16u Black
5' 10" • 149LBSS/L • 17yr 5mo
Travel Team: Diamond Devils - 16u Black
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
70.5
Bat Speed (max)
2/08/26
13.6
Rot. Acc (max)
2/08/26
10
Hard Hit %
2/08/26
91.3
Exit Velocity (max)
2/08/26
81.7
Exit Velocity (avg)
2/08/26
313
Distance (max)
2/08/26
56
Sweet Spot %
6/19/25
6.72
60-yd
6/19/25
3.77
30-yd
2/08/26
1.63
10-yd
2/08/26
20.2
Run speed (max)
2/08/26
-
INF Velo
84
OF Velo
2/08/26
-
C Velo
-
Pop Time
Fastball
82
Velocity (max)
6/19/25
80.2 - 81.3
Velo Range
6/19/25
1981
Spin Rate (avg)
6/19/25
Changeup
69.8 - 73.5
Velo Range
6/19/25
1551
Spin Rate (avg)
6/19/25
Curveball
71.9 - 73.4
Velo Range
6/19/25
2521
Spin Rate (avg)
6/19/25
Positional Tools
2026
2025
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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).
84.0
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
6.72
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.
12.7
Hitting
2026
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
91.3
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.7
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
313
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
165
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
14.5513
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).
85.0
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
75.9
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
299
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
214
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
27.795
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: North (Invite Only)
Feb 8, 2026
Trackman - Hitting
91.3
Exit Velocity (max)
81.7
Exit Velocity (avg)
165
Distance (avg)
313
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2025 Prep Baseball Scout Day: Diamond Devils
Jun 19, 2025
Trackman - Hitting
85.0
Exit Velocity (max)
75.9
Exit Velocity (avg)
214
Distance (avg)
299
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2026
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.6
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.5
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
70.5
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
66.3
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: North (Invite Only)
Feb 8, 2026
Blast - Hitting
20.6
Hand Speed (max)
19.5
Hand Speed (avg)
70.5
Bat Speed (max)
66.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.6
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
80.6
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).
1981
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.
24.6
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).
72.7
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).
2521
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).
71.8
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).
1551
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).
2025 Prep Baseball Scout Day: Diamond Devils
Jun 19, 2025
Trackman - Fastball
81.6
Velocity (max)
80.2 - 81.3
Velo Range
78.6
Eff Velocity (avg)
2,015
Spin Rate (max)
1,981
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
73.4
Velocity (max)
71.9 - 73.4
Velo Range
70.2
Eff Velocity (avg)
2,637
Spin Rate (max)
2,521
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
73.5
Velocity (max)
69.8 - 73.5
Velo Range
70.5
Eff Velocity (avg)
1,627
Spin Rate (max)
1,551
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
2025
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
Pitching Velos
2025
2024
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
80.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.5
Changeup
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).
76.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
65.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.5
Game Performance
2026
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.63
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.77
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.8
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.
Preseason All-State: North (Invite Only)
Feb 8, 2026
Vald
1.63
10-yd
3.77
30-yd
6.80
60-yd
20.2
Run speed (max)
1.09
RSI (max)
25.5
Jump Height (max)
Vizual Edge
Pitch Ai
Notes
News
- Preseason All-State North 2026: Trackman Hitting Leaders - Feb 16, 2026
- Preseason All-State North 2026: Data Dive - Feb 11, 2026
- 2025 Prep Baseball Scout Day: Diamond Devils UpperClass: Running Times - Jul 3, 2025
- 2025 Prep Baseball Scout Day: Diamond Devils UpperClass: Trackman Hitting Leaders - Jun 27, 2025
- 2025 Prep Baseball Scout Day: Diamond Devils UpperClass: Data Dive - Jun 26, 2025
- 2025 Prep Baseball Scout Day: Diamond Devils UnderClass: Vald Running Leaders - May 27, 2025
Comments
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Physical
2026
Grip Strgth (LH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.
Grip Strgth (RH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.