89
Velocity (max)
8/06/24
CLASS OF 2025
RHP
SS
Jackson
Kees
DeKalb (HS) • IL
6' 2" • 164.5LBS
R/R • 18yr 1mo
Travel Team: GRB Rays Illinois
6' 2" • 164.5LBSR/R • 18yr 1mo
Travel Team: GRB Rays Illinois
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
86 - 88.1
Velo Range
8/06/24
2035
Spin Rate (avg)
8/06/24
Changeup
81 - 82
Velo Range
8/06/24
1445
Spin Rate (avg)
2/10/24
Curveball
78 - 79
Velo Range
8/06/24
1570
Spin Rate (avg)
8/06/24
Positional Tools
Hitting
Hitting
Pitching
2024
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
88.9
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
86.1
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).
2024
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.
23.5
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).
74.5
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).
1512
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).
76.8
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).
1391
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).
Illinois State Games (Invite-Only)
Aug 6, 2024
Trackman - Fastball
88.9
Velocity (max)
86.0 - 88.1
Velo Range
86.0
Eff Velocity (avg)
2,127
Spin Rate (max)
2,035
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
78.7
Velocity (max)
78.0 - 78.7
Velo Range
77.2
Eff Velocity (avg)
1,713
Spin Rate (max)
1,570
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)
81.2 - 81.6
Velo Range
81.1
Eff Velocity (avg)
1,269
Spin Rate (max)
1,229
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
McHenry Preseason ID
Feb 10, 2024
Trackman - Fastball
83.7
Velocity (max)
82.9 - 83.6
Velo Range
81.6
Eff Velocity (avg)
2,141
Spin Rate (max)
1,991
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
74.4
Velocity (max)
71.3 - 73.7
Velo Range
70.6
Eff Velocity (avg)
1,659
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)
Trackman - ChangeUp
76.9
Velocity (max)
74.4 - 76.2
Velo Range
73.7
Eff Velocity (avg)
1,596
Spin Rate (max)
1,445
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
Pitching Velos
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
89.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
85.7
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.3
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
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
82.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.0
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
Game Performance
Visual Edge
Pitch Ai
Notes
News
- Illinois State Games: Class of 2025 Pitcher Analysis - Nov 6, 2024
- Illinois 2025 Rankings: Risers - Aug 29, 2024
- Illinois State Games: 2025 Takeaways - Aug 21, 2024
- Rock Summer Championship 17U: Takeaways - Aug 1, 2024
- Illinois 2025 Rankings: Risers - May 23, 2024
- McHenry Preseason ID: Pitcher Analysis - Apr 18, 2024
- McHenry Preseason ID: Quick Hits - Feb 14, 2024
Comments
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RHP Jackson Kees (DeKalb; Grand Valley State commit) came away a winner from the event. Highly projectable 6-foot-2, 164-pounds, lean limbs with a high waist, plenty of room to add on strength. He works down the mound with a high front side, moving with a tall/fall lower-half and over-the-top release to create angle on all his pitches through the zone, especially his fastball, which played around 85-88 mph with tilt and carry. His curveball plays with some gradual 11/5 shape with the ability to keep it to his glove side, 75-77 mph. Flashed a straight changeup at 81 mph.
Verbally committed to Grand Valley State.
Positional Profile: RHP/SS
Body: 6-2, 164.5-pounds.
Delivery: Clean operation with medium leg lift, works in line to the plate, stays balanced throughout, shoulders work uphill down the mound.
Arm Action: RH. Loose, easy arm, shorter circle, high 3/4 slot.
FB: T89, 86-88 mph. Plays with carry at the top of the zone. T2127, 2035 average rpm.
CB: 78-79 mph. Throws with intent, 11/5 shape. T1713, 1570 average rpm.
CH: 81-82 mph. Plays mostly straight through the zone. T1269, 1229 average rpm.
Positional Profile: RHP/SS
Body: 6-3, 155-pounds. Projectable, wiry build with a high waist.
Delivery: Clean operation, easy effort, medium leg lift with a controlled tempo into balance point, tall/fall lower-half that works in-line to the plate, high front side, balanced finish.
Arm Action: RH. Long/loose arm swing, high 3/4 release, tough angle to pick up.
FB: T84, 83-84 mph. Plays with run and life through the zone, carry at the top of the zone. T2141, 1991 average rpm.
CB: 71-74 mph. Big-breaking 11/5 shape, plays off FB's at the top of the zone, feel down in the zone. T1659, 1483 average rpm.
CH: 74-76 mph. Similar fastball arm action, feel for the zone with running action. T1596, 1445 average rpm.