@Jason_Kleinerjr 74.3
Velocity (max)
7/07/26
CLASS OF 2027
RHP
Jason
Kleiner
Lake Nona (HS) • FL
6' 1" • 164LBS
R/R • 17yr 10mo
Travel Team: PYF Rays
6' 1" • 164LBS
R/R • 17yr 10mo
Travel Team: PYF Rays
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
71.9 - 74.2
Velo Range
7/07/26
1938
Spin Rate (avg)
7/07/26
Changeup
68 - 70
Velo Range
7/07/26
1630
Spin Rate (avg)
7/07/26
Slider
65.2 - 68
Velo Range
7/07/26
2107
Spin Rate (avg)
7/07/26
Positional Tools
Hitting
Hitting
Pitching
2026
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
74.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
73.0
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).
1938
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.
26.5
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).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
69.1
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).
1630
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).
66.5
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).
2107
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).
Orlando Summer ID
Jul 7, 2026
Trackman - Fastball
74.3
Velocity (max)
71.9 - 74.2
Velo Range
71.2
Eff Velocity (avg)
2,004
Spin Rate (max)
1,938
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
69.3
Velocity (max)
65.2 - 68.0
Velo Range
64.2
Eff Velocity (avg)
2,155
Spin Rate (max)
2,107
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
70.1
Velocity (max)
68.5 - 69.9
Velo Range
66.9
Eff Velocity (avg)
1,695
Spin Rate (max)
1,630
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
2026
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
2026
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
74.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.0
Changeup
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)
66.5
Game Performance
Vizual Edge
Pitch Ai
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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.
Positional Profile: RHP
Body: 6-1, 164-pounds. High waisted, lanky projectable frame with long limbs. Athletic build with room for continued physical development.
Delivery: Creates deception with an unconventional delivery. Jumps significantly to the side and delivers from a sidearm slot, creating an extreme angle that gives hitters a different look.
Arm Action: RH. Sidearm arm slot with a unique angle to the plate. Uses his length and release point to create deception and movement.
FB: T74, 72-74 mph. Fastball plays with deception due to the unusual delivery angle. Shows the ability to attack the zone and consistently throw strikes. T2004, 1938 average rpm.
SL: 65-68 mph. Slider shows developing shape with the potential to play off the fastball’s unique angle. T2155, 2107 average rpm.
CH: 68-70 mph. Changeup provides separation from the fastball and gives him another offering to disrupt timing. Shows developing feel. T1695, 1630 average rpm.