@Jknick03 21.1
Hand Speed (max)
2/18/26
CLASS OF 2027
SS
1B
Jackson
Knickerbocker
Yorkville (HS) • IL
6' 3" • 207LBS
R/R • 17yr 6mo
Travel Team: K’s Rhino
6' 3" • 207LBSR/R • 17yr 6mo
Travel Team: K’s Rhino
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
73.6
Bat Speed (max)
2/18/26
14.1
Rot. Acc (max)
2/18/26
50
Hard Hit %
2/18/26
98.6
Exit Velocity (max)
2/18/26
90.3
Exit Velocity (avg)
2/18/26
354
Distance (max)
2/18/26
50
Sweet Spot %
2/18/26
7.49
60-yd
2/18/26
4.15
30-yd
2/18/26
1.76
10-yd
2/18/26
18.4
Run speed (max)
2/18/26
82
INF Velo
2/18/26
-
OF Velo
-
C Velo
-
Pop Time
Fastball
87.2
Velocity (max)
2/18/26
86 - 87.1
Velo Range
2/18/26
2153
Spin Rate (avg)
2/18/26
Changeup
75.2 - 77.1
Velo Range
2/18/26
1544
Spin Rate (avg)
2/18/26
Curveball
72.5 - 74.3
Velo Range
2/18/26
1812
Spin Rate (avg)
2/18/26
Positional Tools
2026
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.49
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
82.0
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.
13.2
Hitting
2026
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
98.6
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
90.3
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
354
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
211
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
14.907
Hard Hit %
Percentage of batted balls with exit velocities over 90 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.
Peoria Preseason ID
Feb 18, 2026
Trackman - Hitting
98.6
Exit Velocity (max)
90.3
Exit Velocity (avg)
211
Distance (avg)
354
Distance (max)
Hard Hit %
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.
21.1
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.5
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
73.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
69.9
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.
Peoria Preseason ID
Feb 18, 2026
Blast - Hitting
21.1
Hand Speed (max)
20.5
Hand Speed (avg)
73.6
Bat Speed (max)
69.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2026
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.2
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
86.5
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).
2153
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.
24.9
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).
73.4
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).
1812
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).
76.2
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).
1544
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).
Peoria Preseason ID
Feb 18, 2026
Trackman - Fastball
87.2
Velocity (max)
86.0 - 87.1
Velo Range
85.0
Eff Velocity (avg)
2,333
Spin Rate (max)
2,153
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
74.6
Velocity (max)
72.5 - 74.3
Velo Range
71.9
Eff Velocity (avg)
1,895
Spin Rate (max)
1,812
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
77.1
Velocity (max)
75.2 - 77.1
Velo Range
76.2
Eff Velocity (avg)
1,609
Spin Rate (max)
1,544
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
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
2026
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
86.5
Curveball
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)
76.0
Game Performance
2026
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.76
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.15
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.49
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.
Peoria Preseason ID
Feb 18, 2026
Vald
1.76
10-yd
4.15
30-yd
7.49
60-yd
18.4
Run speed (max)
1.92
RSI (max)
18.8
Jump Height (max)
Vizual Edge
2026
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.
76.32
Pitch Ai
Notes
News
- Peoria Preseason ID: Top Overall Prospects - May 6, 2026
- Peoria Preseason ID: Pitcher Analysis - May 5, 2026
- Peoria Preseason ID: Infield Analysis - May 5, 2026
- Peoria Preseason ID: Positional Data Dive - Feb 27, 2026
- Peoria Preseason ID: Pitcher Data Dive - Feb 27, 2026
- Peoria Preseason ID: Takeaways - Feb 26, 2026
- Peoria Preseason ID: Statistical Analysis - Feb 23, 2026
Comments
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Contact
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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: SS/1B
Body: 6-3, 210-pounds. High waisted, strong frame.
Hit: RHH. Two tap stride, wider base, bat wiggle. Easy and flat swing, works on top of the ball 69.9 mph bat speed with 13g of rotational acceleration.
Power: 99 mph max exit velocity (90.3 avg.); 354-foot max batted distance.
Arm: RH. INF - 82 mph. Over the top release, half arm circle.
Defense: Works around the ball, two hand gather in front, transfer plays.
Athletic Testing: 7.49 runner in the 60-yard dash; 18.80-inch max vertical jump.
Vizual Edge: 76.32 Edge Score.
Delivery: Stretch-only, tall, higher leg lift, glove tap at peak, drop/drive down the mound.
Arm Action: RH. 3/4 slot, loose arm, arm plays.
FB: T87, 86-87 mph. Clean out of the hand with jump, downward tilt. T2333, 2153 average rpm.
CB: 72-74 mph. Firm, vertical action, 12/6 shape, plays at the bottom of the zone. T1895, 1812 average rpm.
CH: 75-77 mph. Mostly straight actions, developing. T1609, 1544 average rpm.
RHP/INF Jackson Knickerbocker (Yorkville, 2027) is a physical 6-foot-3, 207-pound two-way to know. On the mound, he had a dynamic showing with his three-pitch mix; his fastball played 86-87 mph with significant carry (avg. 20.5” IVB - second-best for the event) and flashing above-average spin (T2333 rpm). He then was able to throw both his curveball and changeup for strikes 75% of the time; his curveball sat 72-75 mph with firm 12/6 action, while his changeup sat 75-77 mph. On the other side of the ball, the right-handed hitter showed easy strength with a flat swing through the zone, peaking at 99 mph for his EV while averaging 90 mph.