76.8
Velocity (max)
8/29/25
CLASS OF 2025
LHP
OF
Daniel
Gross
J Sterling Morton West (HS) • IL
5' 9" • 165LBS
L/L • 19yr
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
75.5 - 76.4
Velo Range
8/29/25
2196
Spin Rate (avg)
10/06/24
Changeup
70.7 - 70.8
Velo Range
8/29/25
1492
Spin Rate (avg)
10/06/24
Curveball
69.1 - 70.9
Velo Range
8/29/25
2194
Spin Rate (avg)
8/29/25
69
Exit Velocity (max)
4/21/21
-
Exit Velocity (avg)
-
Distance (max)
-
Sweet Spot %
8.11
60-yd
4/21/21
-
30-yd
-
10-yd
-
Run speed (max)
-
INF Velo
68
OF Velo
4/21/21
-
C Velo
-
Pop Time
Positional Tools
2021
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.11
Outfield Velocity
The athlete's maximum throwing velocity from an outfield 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.
8.5
Hitting
Hitting
Pitching
2025
2024
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
76.8
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).
2167
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.
28.5
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).
70.2
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).
2194
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).
70.8
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).
1424
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).
73.1
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
72.8
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).
2196
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.
30.2
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).
66.3
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).
2039
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).
68.6
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).
1492
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).
Harper JC Scout Day
Aug 29, 2025
Trackman - Fastball
76.8
Velocity (max)
75.5 - 76.4
Velo Range
74.6
Eff Velocity (avg)
2,227
Spin Rate (max)
2,167
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
70.9
Velocity (max)
69.1 - 70.9
Velo Range
68.2
Eff Velocity (avg)
2,272
Spin Rate (max)
2,194
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
70.8
Velocity (max)
70.7 - 70.8
Velo Range
69.0
Eff Velocity (avg)
1,442
Spin Rate (max)
1,424
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Unsigned Senior Showcase
Oct 6, 2024
Trackman - Fastball
73.1
Velocity (max)
72.4 - 73.1
Velo Range
70.8
Eff Velocity (avg)
2,284
Spin Rate (max)
2,196
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)
65.4 - 67.1
Velo Range
64.1
Eff Velocity (avg)
2,295
Spin Rate (max)
2,039
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
69.5
Velocity (max)
67.7 - 69.5
Velo Range
66.4
Eff Velocity (avg)
1,635
Spin Rate (max)
1,492
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
2024
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
2024
2021
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
73.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.2
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
66.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
68.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.5
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
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
Game Performance
Vizual Edge
Pitch Ai
Notes
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Positional Profile: LHP/OF
Body: 5-9, 160-pounds. Trim, high-waisted frame with room to fill out.
Delivery: Hybrid delivery, controlled tempo, high leg kick into slightly coiled balance point, tall/fall lower-half.
Arm Action: LH. Loose, clean arm action, high 3/4 slot.
FB: T73, 72-73 mph. Mostly straight actions. T2284, 2196 average rpm.
CB: 65-67 mph. 1/7 action, plays at the bottom of the zone, occasional depth. Best of the offspeed offerings. T2295, 2039 average rpm.
CH: 68-69 mph. Plays with arm-side fade, has some tumble to it. T1635, 1492 average rpm.
Position: LHP/OF
Body: 5-foot-7, 130-pound lean build.
Hit: (LHH) Started in a balanced tall stance with a small load, then used a short stride. Short level swing. Line drive pull side approach.
Power: 69 mph exit velocity.
Defense: (OF) Fluid footwork, clean exchange.
Arm: 68 mph outfield velocity. Short arm action, high ¾ slot.
Speed: 8.11 (60-yard dash).
Pitching: Up-tempo tall-and-fall delivery, easy effort. ¾ arm angle, short arm action. Lands square, a falling off finish.
FB: T68. 67-68 mph. Straight movement.
CB: 62-65 mph. Gradual action, 1/7 shape.
CH: 64-66 mph. Slight fading action, straight movement.