21.1
Hand Speed (max)
3/05/23
CLASS OF 2025
SS
2B
Jacob
Koerselman
Valley (HS) • IA
5' 11" • 195LBS
R/R • 18yr 11mo
Travel Team: Iowa Sticks
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
77
Bat Speed (max)
9/19/25
18.8
Rot. Acc (max)
9/19/25
60
Hard Hit %
9/19/25
98
Exit Velocity (max)
9/19/25
86.5
Exit Velocity (avg)
8/28/24
352
Distance (max)
9/19/25
67
Sweet Spot %
8/28/24
6.84
60-yd
8/28/24
3.90
30-yd
9/19/25
1.70
10-yd
9/19/25
19.9
Run speed (max)
9/19/25
90
INF Velo
9/19/25
-
OF Velo
-
C Velo
-
Pop Time
Fastball
70
Velocity (max)
9/21/21
68 - 70
Velo Range
9/21/21
-
Spin Rate (avg)
Changeup
64 - 66
Velo Range
9/21/21
-
Spin Rate (avg)
Curveball
62 - 63
Velo Range
9/21/21
-
Spin Rate (avg)
Positional Tools
2025
2024
2023
2022
2021
2020
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
6.99
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
90.0
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.
14.0
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
6.84
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
87.0
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.
14.1
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.13
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
79.0
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.
12.8
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.33
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
75.0
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.
11.3
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.78
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
72.0
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.
10.3
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.19
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
64.0
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.
8.7
Hitting
2025
2024
2023
2022
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
98.0
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
82.9
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
352
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
178
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
10.2505
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.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
96.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
84.4
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
326
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
237
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
22.7727
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.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
91.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
80.5
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
307
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
193
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
16.6004
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.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
83.1
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
66.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
292
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
212
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
35.5692
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.
ICCAC Fall Showcase
Sep 19, 2025
Trackman - Hitting
98.0
Exit Velocity (max)
82.9
Exit Velocity (avg)
178
Distance (avg)
352
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Ground Ball %
IA Scout Day- Iowa Sticks
Aug 28, 2024
Trackman - Hitting
96.5
Exit Velocity (max)
86.5
Exit Velocity (avg)
212
Distance (avg)
316
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Prep Baseball Iowa State Games
Aug 3, 2024
Trackman - Hitting
95.6
Exit Velocity (max)
84.1
Exit Velocity (avg)
251
Distance (avg)
319
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
PBR IA Preseason All-State (Invite Only)
Mar 3, 2024
Trackman - Hitting
94.2
Exit Velocity (max)
83.1
Exit Velocity (avg)
239
Distance (avg)
326
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
PBR IA Scout Day- Iowa Sticks
Aug 30, 2023
Trackman - Hitting
89.4
Exit Velocity (max)
79.3
Exit Velocity (avg)
239
Distance (avg)
307
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
PBR IA Preseason All-State (Invite Only)
Mar 5, 2023
Trackman - Hitting
91.2
Exit Velocity (max)
81.8
Exit Velocity (avg)
147
Distance (avg)
298
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Ground Ball %
PBR IA Scout Day- IA Sticks (2025 & 2026 Grads)
Aug 31, 2022
Trackman - Hitting
83.1
Exit Velocity (max)
66.8
Exit Velocity (avg)
212
Distance (avg)
292
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Hitting
2025
2024
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.3
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
77.0
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
75.8
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.
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.8
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.8
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
76.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
73.8
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.
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.
20.6
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
72.8
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
70.7
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.
ICCAC Fall Showcase
Sep 19, 2025
Blast - Hitting
20.3
Hand Speed (max)
19.9
Hand Speed (avg)
77.0
Bat Speed (max)
75.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Prep Baseball Iowa State Games
Aug 3, 2024
Blast - Hitting
20.7
Hand Speed (max)
19.9
Hand Speed (avg)
76.6
Bat Speed (max)
73.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
PBR IA Preseason All-State (Invite Only)
Mar 3, 2024
Blast - Hitting
20.8
Hand Speed (max)
19.8
Hand Speed (avg)
76.3
Bat Speed (max)
74.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
PBR IA Preseason All-State (Invite Only)
Mar 5, 2023
Blast - Hitting
21.1
Hand Speed (max)
20.6
Hand Speed (avg)
72.8
Bat Speed (max)
70.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
Pitch Scores
Pitching Velos
2021
2020
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
70.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
69.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
62.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
65.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
65.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
63.5
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.7
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.9
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.99
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vizual Edge
Pitch Ai
Notes
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Physical
2024
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
Body: 5_10, 175-pounds.
Defense: RH. INF - 85 mph. Active fielder and is light on his feet, higher posture at times, confident overall actions and has a strong arm with accuracy across infield.
Hit: RHH. compact strength, stiffer hands in swing, gap to gap approach, flashes of line drive pop in bat.
Power: 96.00 mph max exit velocity per Trackman during BP.
Run: 7.07 runner in the 60.
Positional Profile: SS/RHP
Body: 5-10, 170-pounds.
Defense: RH. INF - 85.00 mph. Higher energy and tempo to field, moves well laterally, athletic hands and feet.
Hit: RHH. Smaller compact frame with solid strength, square stance, some longer movements to deliver barrel, flat swing plane with flashes of pop in bat.
Power: 94 mph max Trackman exit velocity in bp.
Run: 6.90 runner in the 60.
Positional Profile: SS
Body: 5_9, 165-pounds.
Defense: INF - 77 mph. Active in field and plays with energy, glove is sound, works through ball well, long one piece arm action and footwork to throw create inconsistencies with accuracy.
Hit: RHH. Square stance, shoulder load, balanced lower half, aggressive line drive swing producing flashes of bat speed and pop.
Power: 91.20 mph max Trackman exit velocity in bp.
Run: 7.48 runner in the 60.