95
Velocity (max)
10/20/24
CLASS OF 2025
RHP
OF
Cooper
Jesperson
Eau Claire Memorial (HS) • WI
6' 3" • 174LBS
R/R • 18yr
Travel Team: GRB Green
6' 3" • 174LBS
R/R • 18yr
Travel Team: GRB Green
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
89.7 - 93.1
Velo Range
10/20/24
2517
Spin Rate (avg)
7/18/23
Changeup
74 - 76
Velo Range
10/20/24
1883
Spin Rate (avg)
10/20/24
Slider
76 - 79
Velo Range
10/20/24
2742
Spin Rate (avg)
10/20/24
86.9
Exit Velocity (max)
7/18/23
83.1
Exit Velocity (avg)
7/18/23
263
Distance (max)
7/18/23
50
Sweet Spot %
7/18/23
22.1
Hand Speed (max)
7/18/23
67.1
Bat Speed (max)
7/18/23
16.5
Rot. Acc (max)
7/18/23
-
Hard Hit %
7.25
60
7/18/23
-
30-yd
-
10-yd
-
Run speed (max)
-
INF Velo
85
OF Velo
7/18/23
-
C Velo
-
Pop Time
Positional Tools
2023
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.25
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
85.0
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.
12.0
Hitting
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
86.9
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
83.1
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
263
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
132
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
8.8
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.
Western Wisconsin Open
Jul 18, 2023
Trackman - Hitting
86.9
Exit Velocity (max)
83.1
Exit Velocity (avg)
132
Distance (avg)
263
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.1
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
67.1
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
64.7
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.
Western Wisconsin Open
Jul 18, 2023
Blast - Hitting
22.1
Hand Speed (max)
20.9
Hand Speed (avg)
67.1
Bat Speed (max)
64.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
94.7
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
91.2
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).
2449
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.
26.8
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).
74.9
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).
1883
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).
77.7
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).
2742
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).
Sinker
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
91.6
Sinker
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).
2315
Sinker
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.2
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.6
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).
2517
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.
30.1
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
75.8
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).
2392
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).
Splitter
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
72.8
Splitter
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).
1129
Splitter
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Northern Wisconsin Fall ID
Oct 20, 2024
Trackman - Fastball
94.7
Velocity (max)
89.7 - 93.1
Velo Range
88.4
Eff Velocity (avg)
2,587
Spin Rate (max)
2,449
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
79.9
Velocity (max)
76.3 - 79.0
Velo Range
75.1
Eff Velocity (avg)
2,812
Spin Rate (max)
2,742
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
75.8
Velocity (max)
74.3 - 75.5
Velo Range
73.0
Eff Velocity (avg)
1,923
Spin Rate (max)
1,883
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Sinker
93.7
Velocity (max)
90.1 - 93.1
Velo Range
88.9
Eff Velocity (avg)
2,463
Spin Rate (max)
2,315
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Western Wisconsin Open
Jul 18, 2023
Trackman - Fastball
85.2
Velocity (max)
82.4 - 84.9
Velo Range
81.0
Eff Velocity (avg)
2,669
Spin Rate (max)
2,517
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
77.2
Velocity (max)
74.9 - 76.7
Velo Range
72.6
Eff Velocity (avg)
2,737
Spin Rate (max)
2,392
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Splitter
75.5
Velocity (max)
71.1 - 74.6
Velo Range
69.4
Eff Velocity (avg)
792
Spin Rate (max)
1,129
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
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
Sinker
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.
Sinker
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.
Sinker
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.
Northern Wisconsin Fall ID
Oct 20, 2024
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Sinker
Hop+
Sink+
Rise+
Pitch Scores - Slider
Hammer+
Sweep+
Pitching Velos
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
95.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
91.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
75.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.5
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)
83.5
Slider
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
Visual Edge
2023
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.
67.86
Pitch Ai
Notes
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Comments
Draft Reports
Contact
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Positional Profile: RHP/OF
Body: 6-3, 174-pounds. Athletic, long levers, more projection coming.
Delivery: Athletic with dynamic lower half, drives hard with lower half down the mound with good direction.
Arm Action: RH. Full arc, online, very quick arm, low 3/4 slot, repeats.
FB: T95, 90-93 mph. Late boring running action, ball jumps out of hand, shows impressive command of the baseball. T2587, 2449 average rpm.
SL: 76-79 mph. Late sweeping slider, nasty bite to the pitch, pairs well with the fastball, serious out-pitch weapon, Major League quality. T2812, 2742 average rpm.
CH: 74-76 mph. Thrown with fastball intent, late depth at the plate, swing and miss weapon, nasty. T1923, 1883 average rpm.
Listed at 6-foot-3, 165 pounds, we got our first look at RHP/OF Cooper Jesperson (Eau Claire Memorial, 2025), who was impressive on both sides of the ball. At the plate, the incoming junior featured a whippy barrel that made efficient contact and worked with an opposite-field approach. The Eau Claire Memorial two-way impressed on the mound, which garnered attention on Tuesday. Jesperson displayed a high leg kick that transitioned into a smooth delivery with intent through extension. He showcased a whippy, fluid arm action that works quickly through the arm motion. His repertoire contained a fastball, a slider, and a splitter. Jesperson ran his fastball up to 85 mph as the pitch seemed to jump out of his hand without effort. His slider was the most impressive of the three pitches as it contained a tight break throughout with feel for placement. His third pitch, a splitter, was a complement to the first two pitches and contained some depth with a foundation to develop the pitch into a respectable third option. Jesperson’s performance and display of ability at Tuesday’s event puts him on our radar for the rest of the summer and into his junior season.
Positional Profile: RHP/OF
Body: 6-3, 165-pounds. Lean, wiry frame with long levers.
Hit: RHH. Wide stance, upright torso, relaxed setup. Leverage in swing. Whippy barrel with loft to swing. Opposite field approach. Some power to the middle. 64.7 mph bat speed with 14 G’s of rotational acceleration.
Power: 87 max exit velocity, averaged 83.1 mph. 263’ max distance.
Arm: RH. OF - 85 mph. Full arm loop. Carry and accurate to bag.
Defense: Quick first step. Fields tall and to the side of body. Quality reads on fly balls.
Run: 7.25 runner in the 60.
Delivery: High leg kick that extends out, drives through extension, slightly drop and drive.
Arm Action: RH. Whippy, fluid arm action, quick through forward motion, controlled action.
FB: T85, 82-85 mph. T2669, 2517 average rpm.
SL: 75-77 mph. Tight break, break throughout, feel for pitch. T2737, 2392 average rpm.
SPLT: 71-75 mph. Developing feel, some depth present.