18.4
Hand Speed (max)
10/11/25
CLASS OF 2029
OF
RHP
Jace
Stephenson
Jerome (HS) • ID
5' 10" • 160LBS
R/R • 15yr 2mo
5' 10" • 160LBSR/R • 15yr 2mo
Rankings
2029 National
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
63.2
Bat Speed (max)
10/11/25
7
Rot. Acc (max)
10/11/25
-
Hard Hit %
81.4
Exit Velocity (max)
10/11/25
60.2
Exit Velocity (avg)
10/11/25
266
Distance (max)
10/11/25
50
Sweet Spot %
10/11/25
7.76
60-yd
10/11/25
3.96
30-yd
10/11/25
1.65
10-yd
10/11/25
17.9
Run speed (max)
10/11/25
-
INF Velo
74
OF Velo
10/11/25
-
C Velo
-
Pop Time
Fastball
72.5
Velocity (max)
10/11/25
68.6 - 71.5
Velo Range
10/11/25
1738
Spin Rate (avg)
10/11/25
Changeup
64 - 65.9
Velo Range
10/11/25
1594
Spin Rate (avg)
10/11/25
Curveball
57 - 57.5
Velo Range
10/11/25
1656
Spin Rate (avg)
10/11/25
Positional Tools
2025
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Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
74.0
Hitting
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
81.4
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
60.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
266
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
234
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
30.291
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.
Southern Idaho Fall ID
Oct 11, 2025
Trackman - Hitting
81.4
Exit Velocity (max)
60.2
Exit Velocity (avg)
234
Distance (avg)
266
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Hitting
2025
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
18.4
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
17.5
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
63.2
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
62.1
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.
Southern Idaho Fall ID
Oct 11, 2025
Blast - Hitting
18.4
Hand Speed (max)
17.5
Hand Speed (avg)
63.2
Bat Speed (max)
62.1
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
72.5
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
70.1
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).
1738
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).
57.1
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).
1656
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).
65.0
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).
1594
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).
Southern Idaho Fall ID
Oct 11, 2025
Trackman - Fastball
72.5
Velocity (max)
68.6 - 71.5
Velo Range
68.3
Eff Velocity (avg)
1,805
Spin Rate (max)
1,738
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
57.6
Velocity (max)
57.0 - 57.5
Velo Range
55.1
Eff Velocity (avg)
1,750
Spin Rate (max)
1,656
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
65.9
Velocity (max)
64.0 - 65.9
Velo Range
62.9
Eff Velocity (avg)
1,635
Spin Rate (max)
1,594
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
Pitching Velos
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.65
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.96
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.76
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
2025
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.
74.22
Pitch Ai
Notes
News
Comments
Draft Reports
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Physical
2025
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.