@jack_kasper2029 82
Velocity (max)
10/18/25
CLASS OF 2029
RHP
OF
Jack
Kasper
Cardinal Gibbons (HS) • NC
6' 1" • 169.1LBS
R/R • 14yr 11mo
Travel Team: Dirtbags 15U National
6' 1" • 169.1LBSR/R • 14yr 11mo
Travel Team: Dirtbags 15U National
Rankings
2029 National
Rankings available to Premium Subscriber
2029 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
78.8 - 81.1
Velo Range
10/18/25
1949
Spin Rate (avg)
10/18/25
Changeup
72 - 74
Velo Range
10/18/25
1101
Spin Rate (avg)
10/18/25
Curveball
69.6 - 72.5
Velo Range
10/18/25
1795
Spin Rate (avg)
10/18/25
92.6
Exit Velocity (max)
10/18/25
82.5
Exit Velocity (avg)
10/18/25
324
Distance (max)
10/18/25
33
Sweet Spot %
10/18/25
21.3
Hand Speed (max)
10/18/25
80.6
Bat Speed (max)
10/18/25
13.6
Rot. Acc (max)
10/18/25
33
Hard Hit %
10/18/25
6.88
60-yd
10/18/25
3.80
30-yd
10/18/25
1.59
10-yd
10/18/25
19.9
Run speed (max)
10/18/25
-
INF Velo
76
OF Velo
10/18/25
-
C Velo
-
Pop Time
Positional Tools
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).
76.0
Hitting
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
92.6
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
82.5
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
324
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
162
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
16.2294
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.
2025 Underclass Top Prospect Games - 2028 & 2029 classes
Oct 18, 2025
Trackman - Hitting
92.6
Exit Velocity (max)
82.5
Exit Velocity (avg)
162
Distance (avg)
324
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2025
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
21.3
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.7
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
80.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
74.4
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.
2025 Underclass Top Prospect Games - 2028 & 2029 classes
Oct 18, 2025
Blast - Hitting
21.3
Hand Speed (max)
19.7
Hand Speed (avg)
80.6
Bat Speed (max)
74.4
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).
81.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
79.9
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).
1949
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).
71.0
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).
1795
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).
72.9
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).
1101
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 Underclass Top Prospect Games - 2028 & 2029 classes
Oct 18, 2025
Trackman - Fastball
81.8
Velocity (max)
78.8 - 81.1
Velo Range
78.3
Eff Velocity (avg)
2,132
Spin Rate (max)
1,949
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
72.9
Velocity (max)
69.6 - 72.5
Velo Range
68.8
Eff Velocity (avg)
2,059
Spin Rate (max)
1,795
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
73.9
Velocity (max)
72.0 - 73.9
Velo Range
70.5
Eff Velocity (avg)
1,376
Spin Rate (max)
1,101
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
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
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
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)
80.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
71.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.0
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.59
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.8
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.88
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.
2025 Underclass Top Prospect Games - 2028 & 2029 classes
Oct 18, 2025
Vald
1.59
10-yd
3.80
30-yd
6.88
60-yd
19.9
Run speed (max)
1.48
RSI (max)
21.8
Jump Height (max)
Vizual Edge
Pitch Ai
Notes
News
- Inside the 2029 Rankings: 50 Names to Know - Dec 1, 2025
- BLAST Leaders: Top Prospect Games Underclass - Nov 6, 2025
- Top Athletic Testing: Top Prospect Games Underclass - Nov 4, 2025
- TrackMan Leaders: Top Prospect Underclass Bats - Oct 30, 2025
- Quick Hitters: Top Prospect Games Underclass - Arms - Oct 28, 2025
- Quick Hitters: Top Prospect Games Underclass - Hitters - Oct 27, 2025
- Data Dive: Top Prospect Games Underclass - Oct 22, 2025
- Fall Top Prospect Games: NC' s Top Talent Set to Take McCrary Park - Oct 16, 2025
Comments
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Contact
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Physical
2025
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.
Jack Kasper, Cardinal Gibbons (NC), 2029
Positional Profile: RHP/OF
Body: 6-1, 169-pounds. Lean. Long torso.
Delivery: Short rocker step, Closed at foot strike, Deception with front side.
Arm Action: RH. Whippy arm from a funky 3/4 slot. Short arm swing with high back elbow.
FB: T82, 79-81 mph. Sinking action mainly works to arm side. T2132, 1949 average rpm.
CB: 70-72 mph. Average spin with early break. Can break horizontal at higher velos. T2059, 1795 average rpm.
CH: 72-74 mph. T1376, 1101 average rpm.
ATH: 6.88 runner in the 60. 1.59 and 3.80 in the 10 and 30 yard splits. 21.80 max vertical.