@Maxkostowicz 22.9
Hand Speed (max)
8/11/26
CLASS OF 2028
OF
LHP
Max
Kostowicz
Franklin High School, WI (HS) • WI
5' 11" • 165.1LBS
L/L • 16yr 8mo
Travel Team: PTA Cardinal 16u
5' 11" • 165.1LBS
L/L • 16yr 8mo
Travel Team: PTA Cardinal 16u
Rankings
2028 National
Rankings available to Premium Subscriber
2028 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
69.9
Bat Speed (max)
8/11/26
19.9
Rot. Acc (max)
3/21/26
20
Hard Hit %
8/11/26
98.2
Exit Velocity (max)
8/11/26
86.7
Exit Velocity (avg)
8/11/26
351
Distance (max)
3/21/26
70
Sweet Spot %
3/21/26
6.68
60-yd
8/11/26
3.71
30-yd
8/11/26
1.58
10-yd
8/11/26
20.7
Run speed (max)
8/11/26
-
INF Velo
82
OF Velo
8/11/26
-
C Velo
-
Pop Time
Fastball
79.3
Velocity (max)
3/21/26
76 - 79
Velo Range
3/21/26
1926
Spin Rate (avg)
3/21/26
Curveball
71.1 - 73.1
Velo Range
8/11/26
1932
Spin Rate (avg)
8/11/26
Slider
70.7 - 72
Velo Range
3/21/26
1901
Spin Rate (avg)
3/21/26
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)
6.68
Outfield Velocity
The athlete's maximum throwing velocity from an outfield 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.
14.7
Hitting
2026
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
98.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
84.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
351
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
200
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
14.7607
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.
Wisconsin State Games (Invite-Only)
Aug 11, 2026
Trackman - Hitting
98.2
Exit Velocity (max)
86.7
Exit Velocity (avg)
168
Distance (avg)
343
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Preseason ID
Mar 21, 2026
Trackman - Hitting
90.4
Exit Velocity (max)
81.8
Exit Velocity (avg)
233
Distance (avg)
351
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.
22.9
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.4
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
69.9
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
66.2
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.
Wisconsin State Games (Invite-Only)
Aug 11, 2026
Blast - Hitting
22.9
Hand Speed (max)
21.8
Hand Speed (avg)
69.9
Bat Speed (max)
67.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Milwaukee Preseason ID
Mar 21, 2026
Blast - Hitting
21.9
Hand Speed (max)
21.0
Hand Speed (avg)
69.0
Bat Speed (max)
65.3
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).
79.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
76.8
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).
1913
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).
70.9
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).
1917
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
71.2
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).
1883
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).
Wisconsin State Games (Invite-Only)
Aug 11, 2026
Trackman - Fastball
77.6
Velocity (max)
75.1 - 76.8
Velo Range
73.4
Eff Velocity (avg)
2,008
Spin Rate (max)
1,901
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
73.4
Velocity (max)
71.1 - 73.1
Velo Range
68.0
Eff Velocity (avg)
2,001
Spin Rate (max)
1,932
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - Slider
71.0
Velocity (max)
70.7 - 71.0
Velo Range
66.6
Eff Velocity (avg)
1,880
Spin Rate (max)
1,836
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Milwaukee Preseason ID
Mar 21, 2026
Trackman - Fastball
79.3
Velocity (max)
76.5 - 78.8
Velo Range
74.5
Eff Velocity (avg)
2,056
Spin Rate (max)
1,926
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
70.0
Velocity (max)
68.7 - 70.0
Velo Range
65.4
Eff Velocity (avg)
1,889
Spin Rate (max)
1,862
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
72.0
Velocity (max)
70.7 - 72.0
Velo Range
68.1
Eff Velocity (avg)
1,927
Spin Rate (max)
1,901
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
Pitching Velos
2026
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
79.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.8
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.8
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
71.2
Game Performance
2026
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.57
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.71
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.68
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.
Wisconsin State Games (Invite-Only)
Aug 11, 2026
Vald
1.58
10-yd
3.71
30-yd
6.68
60-yd
20.7
Run speed (max)
1.62
RSI (max)
25.3
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.
68.53
Pitch Ai
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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: OF/LHP
Body: 5-11, 162.3 pounds. Athletic, lean and twitch frame. Room to fill.
Hit: LHH. Stock set up, gets to strong loaded hitting position on time. Super short and compact swing, quick hands, gets through the ball with authority, all fields approach. 65.3 mph bat speed with 15g of rotational acceleration.
Power: 90 mph max exit velocity (81.8 avg.); 351-foot max batted distance.
Arm: LH. OF - 82 mph. Athletic arm action, clean, 3/4 slot.
Defense: Aggressive routes to the baseball, works behind the baseball.
Athletic Testing: 6.90 runner in the 60-yard dash; 24.90-inch max vertical jump.
Vizual Edge: 68.53 Edge Score.
Delivery: Controlled, medium leg lift, aggressive downhill and balanced.
Arm Action: LH. Straight back into extension, quick flip to high 3/4 slot, slight crossfire.
FB: T79, 76-79 mph. Arm side sink, slight crossfire. T2056, 1926 average rpm.
CB: 69-70 mph. Short break, 11/5 shape. T1889, 1862 average rpm.
SL: 71-72 mph. Slight sweep with depth, 10/4 shape. T1927, 1901 average rpm.