@Jaxton_Kostman 21.2
Hand Speed (max)
2/21/26
CLASS OF 2027
2B
RHP
Jaxton
Kostman
Badger (HS) • WI
5' 8" • 172.2LBS
R/R • 16yr 5mo
Travel Team: USA Prime State Line
5' 8" • 172.2LBSR/R • 16yr 5mo
Travel Team: USA Prime State Line
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
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Best Of Stats
66.2
Bat Speed (max)
2/21/26
13.9
Rot. Acc (max)
2/21/26
-
Hard Hit %
86.8
Exit Velocity (max)
2/21/26
79.8
Exit Velocity (avg)
2/21/26
279
Distance (max)
3/22/25
70
Sweet Spot %
3/22/25
8.37
60-yd
2/21/26
4.53
30-yd
2/21/26
1.88
10-yd
2/21/26
16.0
Run speed (max)
2/21/26
79
INF Velo
2/21/26
-
OF Velo
-
C Velo
-
Pop Time
Fastball
76.1
Velocity (max)
2/21/26
75 - 76
Velo Range
2/21/26
2245
Spin Rate (avg)
2/21/26
Changeup
67 - 69
Velo Range
2/21/26
1627
Spin Rate (avg)
2/21/26
Curveball
64.5 - 66.2
Velo Range
2/21/26
2199
Spin Rate (avg)
2/21/26
Positional Tools
2026
2025
2024
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.37
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.
10.4
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.49
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
74.0
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.
9.6
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
9.22
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
68.0
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.
7.7
Hitting
2026
2025
2024
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
86.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
79.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
275
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
157
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
13.6438
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).
81.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
73.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
279
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
182
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
16.855
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).
70.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
63.7
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
142
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
71
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
5.0658
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.
Wausau Preseason ID
Feb 21, 2026
Trackman - Hitting
86.8
Exit Velocity (max)
79.8
Exit Velocity (avg)
157
Distance (avg)
275
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Preseason ID
Mar 22, 2025
Trackman - Hitting
81.5
Exit Velocity (max)
73.8
Exit Velocity (avg)
182
Distance (avg)
279
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Preseason ID
Mar 16, 2024
Trackman - Hitting
70.5
Exit Velocity (max)
63.7
Exit Velocity (avg)
71
Distance (avg)
142
Distance (max)
Sweet Spot %
Line Drive %
Ground Ball %
Hitting
2026
2025
2024
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
21.2
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.0
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
66.2
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
64.1
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.
20.1
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.
62.0
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
60.1
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.
19.3
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
18.4
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
57.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
55.0
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.
Wausau Preseason ID
Feb 21, 2026
Blast - Hitting
21.2
Hand Speed (max)
20.0
Hand Speed (avg)
66.2
Bat Speed (max)
64.1
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Milwaukee Preseason ID
Mar 22, 2025
Blast - Hitting
20.1
Hand Speed (max)
19.9
Hand Speed (avg)
62.0
Bat Speed (max)
60.1
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Milwaukee Preseason ID
Mar 16, 2024
Blast - Hitting
19.3
Hand Speed (max)
18.4
Hand Speed (avg)
57.6
Bat Speed (max)
55.0
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).
76.1
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
75.2
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).
2245
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.
29.8
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).
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
65.4
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).
2199
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).
67.7
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).
1627
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).
Wausau Preseason ID
Feb 21, 2026
Trackman - Fastball
76.1
Velocity (max)
74.5 - 75.9
Velo Range
74.3
Eff Velocity (avg)
2,302
Spin Rate (max)
2,245
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
66.4
Velocity (max)
64.5 - 66.2
Velo Range
63.0
Eff Velocity (avg)
2,281
Spin Rate (max)
2,199
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
68.6
Velocity (max)
66.9 - 68.5
Velo Range
65.9
Eff Velocity (avg)
1,700
Spin Rate (max)
1,627
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
Pitching Velos
2026
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
76.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
75.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
65.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
63.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
62.0
Game Performance
2024
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.
2026
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.88
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.53
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.37
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.
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.9
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.56
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.49
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vizual Edge
2026
2025
2024
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.
86.69
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.
79.72
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.
70.1
Pitch Ai
Notes
Comments
Draft Reports
Contact
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Physical
2026
2025
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.
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.
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: 2B/SS
Body: 5-7, 154-pounds. Strong build, more size and strength coming.
Hit: RHH. Wide base, toe tap trigger. Quick rotation through the ball, ball jumps off the through the big part of the field. 60.1 mph bat speed with 10 G's of rotational acceleration.
Power: 82 max exit velocity, averaged 73.8 mph. 279' max distance.
Arm: RH. INF-74 mph. Hand to ear, low 3/4 slot.
Defense: Possesses some bounce to step, steady hands, quick release.
ATH: 8.49 runner in the 60. 1.90 and 4.56 in the 10 and 30 yard splits.
Vizual Edge: 79.72 Edge Score
Positional Profile: 2B/SS
Body: 5-3, 125-pounds. Compact frame, some thickness in lower half.
Hit: RHH. Stock setup, small leg lift, controlled stride and finish. Downhill with good sequence, line drive contact through the middle of the field. 55 mph bat speed with 8 G's of rotational acceleration.
Power: 71 max exit velocity, averaged 63.7 mph. 142' max distance.
Arm: RH. INF-68 mph. Accurate throws, 3/4 slot.
Defense: Clean glove, quality feet, replaces feet with direction towards the target.
ATH: 9.22 runner in the 60. 20.70 max vertical.