84.3
Velocity (max)
3/21/26
CLASS OF 2027
RHP
2B
Isaiah
Dufek
Heritage Christian School (HS) • WI
6' 0" • 175.9LBS
R/R • 17yr 1mo
Travel Team: Midwest Halos
6' 0" • 175.9LBSR/R • 17yr 1mo
Travel Team: Midwest Halos
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
83.2 - 84.3
Velo Range
3/21/26
1838
Spin Rate (avg)
3/21/26
Changeup
75 - 77
Velo Range
3/21/26
1673
Spin Rate (avg)
4/04/23
Curveball
66.7 - 70.2
Velo Range
3/21/26
1806
Spin Rate (avg)
3/21/26
95.8
Exit Velocity (max)
3/21/26
81.9
Exit Velocity (avg)
3/21/26
336
Distance (max)
3/21/26
64
Sweet Spot %
3/21/26
20.8
Hand Speed (max)
3/21/26
70.4
Bat Speed (max)
3/21/26
6.1
Rot. Acc (max)
3/21/26
9
Hard Hit %
3/21/26
7.52
60-yd
3/21/26
4.04
30-yd
3/21/26
1.72
10-yd
3/21/26
17.6
Run speed (max)
3/21/26
86
INF Velo
3/21/26
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2026
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)
7.52
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
86.0
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.
12.7
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.24
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.
9.9
Hitting
2026
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
95.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.9
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
336
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
245
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
25.8158
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).
81.3
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
74.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
249
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
112
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
8.9684
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.
Milwaukee Preseason ID
Mar 21, 2026
Trackman - Hitting
95.8
Exit Velocity (max)
81.9
Exit Velocity (avg)
245
Distance (avg)
336
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Rising Stars ID
Apr 4, 2023
Trackman - Hitting
81.3
Exit Velocity (max)
74.2
Exit Velocity (avg)
112
Distance (avg)
249
Distance (max)
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.
20.8
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.2
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
70.4
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
66.8
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.
Milwaukee Preseason ID
Mar 21, 2026
Blast - Hitting
20.8
Hand Speed (max)
20.2
Hand Speed (avg)
70.4
Bat Speed (max)
66.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2026
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
84.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.8
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).
1838
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.
21.9
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).
68.5
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).
1806
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).
75.8
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).
1490
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
76.6
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
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).
1661
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.
22.0
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).
62.0
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).
1803
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).
69.1
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).
1673
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).
Milwaukee Preseason ID
Mar 21, 2026
Trackman - Fastball
84.3
Velocity (max)
83.2 - 84.3
Velo Range
82.4
Eff Velocity (avg)
1,978
Spin Rate (max)
1,838
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Curveball
70.4
Velocity (max)
66.7 - 70.2
Velo Range
66.6
Eff Velocity (avg)
2,145
Spin Rate (max)
1,806
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
77.2
Velocity (max)
75.0 - 76.6
Velo Range
74.4
Eff Velocity (avg)
1,531
Spin Rate (max)
1,490
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Milwaukee Rising Stars ID
Apr 4, 2023
Trackman - Fastball
76.6
Velocity (max)
74.7 - 76.3
Velo Range
73.4
Eff Velocity (avg)
1,791
Spin Rate (max)
1,661
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
63.4
Velocity (max)
60.5 - 63.4
Velo Range
59.4
Eff Velocity (avg)
2,003
Spin Rate (max)
1,803
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
70.6
Velocity (max)
68.2 - 70.2
Velo Range
67.4
Eff Velocity (avg)
1,760
Spin Rate (max)
1,673
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
2023
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.
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
2025
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
84.0
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
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.5
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
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
78.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
63.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
77.0
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)
62.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
69.0
Game Performance
2023
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.91
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.24
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
2026
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.72
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.04
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.52
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
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.
68.3
Pitch Ai
Notes
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Draft Reports
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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.
RHP/1B Isaiah Dufek (Heritage Christian, 2027) is listed at 5-foot-10, 147-pounds with a long, wiry frame that should fill with more size and strength. Dufek impressed our staff with the bat and on the mound. Dufek showed consistent barrel awareness with the ability to hit line drives to both gaps with a short and compact right handed swing. On the mound, his upper-70s fastball displayed hard running action to the arm side and showed feel for the strike zone. He also featured a breaking ball and a changeup and has feel for both secondary offerings.
Isaiah Dufek, Heritage Christian (WI), 2027
Positional Profile: RHP/1B
Body: 5-10, 147-pounds. Long levers, wiry strong, sloped shoulders, projectable.
Delivery: Methodical, deliberate delivery. High in-line leg lift into tall and fall delivery.
Arm Action: RH. Short arm arc into 3/4 slot.
FB: T77, 75-76 mph. Hard running action. T1791, 1661 average rpm.
CB: 61-63 mph. 11/5 action. Some feel. T2003, 1803 average rpm.
CH: 68-70 mph. Run with depth. T1760, 1673 average rpm.
ATH: 8.24 runner in the 60. 1.91 in the 10 yard split.
Isaiah Dufek, Heritage Christian (WI), 2027
Positional Profile: RHP/1B
Body: 5-10, 147-pounds. Long levers, wiry strong, sloped shoulders, projectable.
Hit: RHH. Balanced and athletic stance with narrow knees. Short stride, draws hands back into a smooth loading action. Direct, quick hands, loose bat speed, can drive line drives through both gaps.
Power: 81 max exit velocity, averaged 74.2 mph. 249' max distance.
Arm: RH. INF-68 mph. Short arm path, quick arm accurate.
Defense: Soft hands, feel around the bag.
ATH: 8.24 runner in the 60. 1.91 in the 10 yard split.