78
Velocity (max)
7/17/25
CLASS OF 2029
LHP
1B
John
Hlavacek
Wake Forest (HS) • NC
6' 2" • 178LBS
L/L • 15yr
Travel Team: ZT Prospects
6' 2" • 178LBS
L/L • 15yr
Travel Team: ZT Prospects
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
76 - 78
Velo Range
7/17/25
1883
Spin Rate (avg)
5/17/25
Changeup
67 - 68.1
Velo Range
5/17/25
1310
Spin Rate (avg)
5/17/25
Curveball
69 - 71
Velo Range
7/17/25
2053
Spin Rate (avg)
5/17/25
88.3
Exit Velocity (max)
5/17/25
80.6
Exit Velocity (avg)
5/17/25
329
Distance (max)
5/17/25
29
Sweet Spot %
5/17/25
8.01
60-yd
5/17/25
-
30-yd
1.90
10-yd
5/17/25
-
Run speed (max)
70
INF Velo
5/17/25
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2025
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Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
70.0
Hitting
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
88.3
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
80.6
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
329
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.
2.773
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.
2025 Prep Baseball Scout Day: ZT Prospects
May 17, 2025
Trackman - Hitting
88.3
Exit Velocity (max)
80.6
Exit Velocity (avg)
112
Distance (avg)
329
Distance (max)
Sweet Spot %
Fly Ball %
Ground Ball %
Hitting
Pitching
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
77.1
Fastball
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
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
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.
24.8
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).
66.4
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).
2053
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).
67.6
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).
1310
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).
2025 Prep Baseball Scout Day: ZT Prospects
May 17, 2025
Trackman - Fastball
77.1
Velocity (max)
75.3 - 76.8
Velo Range
73.7
Eff Velocity (avg)
1,974
Spin Rate (max)
1,883
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
67.4
Velocity (max)
65.3 - 67.4
Velo Range
63.9
Eff Velocity (avg)
2,126
Spin Rate (max)
2,053
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
68.1
Velocity (max)
67.0 - 68.1
Velo Range
65.0
Eff Velocity (avg)
1,339
Spin Rate (max)
1,310
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
2025
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
2025
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)
75.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.5
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.9
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.01
Vizual Edge
Pitch Ai
Notes
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Comments
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