Prep Baseball Report

CLASS OF 2028

SS
RHP

William
Pepper

Spring Hill (HS) • KS
5' 11" • 170LBS
R/R • 15yr 6mo
Travel Team: Mac N Seitz Scout
2028 National

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2028 State

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Best of Snapshot
Physical
Positional Tools Velos / Pop
TrackMan Hitting
Blast
TrackMan Pitching
Swift
VALD
Vizual Edge
News
Comments
Contact

Best Of Stats

Hitting
21
Hand Speed (max)
2/09/25
71.6
Bat Speed (max)
2/09/25
14.2
Rot. Acc (max)
8/02/25
50
Hard Hit %
8/02/25
Power
96.1
Exit Velocity (max)
9/14/25
88.3
Exit Velocity (avg)
7/01/25
358
Distance (max)
7/01/25
63
Sweet Spot %
8/02/25
Run
6.94
60-yd
9/14/25
3.86
30-yd
9/14/25
1.60
10-yd
9/14/25
19.9
Run speed (max)
9/14/25
Defense
86
INF Velo
9/14/25
-
OF Velo
-
C Velo
-
Pop Time
Pitching

Fastball

84.3
Velocity (max)
9/14/25
80.4 - 83.2
Velo Range
9/14/25
1696
Spin Rate (avg)
8/02/25

Changeup

76.2 - 76.4
Velo Range
9/14/25
1739
Spin Rate (avg)
9/14/25

Curveball

69.9 - 71.6
Velo Range
9/14/25
2030
Spin Rate (avg)
7/01/25

Slider

68.5 - 70.5
Velo Range
8/02/25
1959
Spin Rate (avg)
7/01/25

Positional Tools

2025
2024
Infield Velocity
86.0
60 Yard Dash
7.50
Home to First
4.13
Infield Velocity
74.0
Power / Speed Score
11.0

Hitting

2025
2024
Exit Velocity Max
96.1
Exit Velocity Avg
87.4
Distance Max
358
Distance Avg
213
Launch Angle Avg
18.6679
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
82.5
Exit Velocity Avg
75.0
Distance Max
277
Distance Avg
149
Launch Angle Avg
16.1572
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Kansas Fall Games (Invite Only)
Sep 14, 2025
Trackman - Hitting
96.1
Exit Velocity (max)
87.2
Exit Velocity (avg)
202
Distance (avg)
313
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Central Super Sophomore Games (Invite-Only)
Aug 2, 2025
Trackman - Hitting
94.9
Exit Velocity (max)
87.4
Exit Velocity (avg)
218
Distance (avg)
347
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
MOKAN Summer ID
Jul 1, 2025
Trackman - Hitting
93.9
Exit Velocity (max)
88.3
Exit Velocity (avg)
229
Distance (avg)
358
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
MOKAN Preseason All-State (Invite-Only)
Feb 9, 2025
Trackman - Hitting
89.7
Exit Velocity (max)
86.3
Exit Velocity (avg)
203
Distance (avg)
314
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Mac N Seitz Scout Day
Nov 9, 2024
Trackman - Hitting
79.9
Exit Velocity (max)
76.0
Exit Velocity (avg)
129
Distance (avg)
269
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
MOKAN Rising Stars ID
Jun 18, 2024
Trackman - Hitting
82.5
Exit Velocity (max)
74.0
Exit Velocity (avg)
166
Distance (avg)
277
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2025
2024
Hand Speed Max
21.0
Hand Speed Avg
19.4
Bat Speed Max
71.6
Bat Speed Avg
65.2
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
17.1
Hand Speed Avg
16.3
Bat Speed Max
64.0
Bat Speed Avg
62.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Kansas Fall Games (Invite Only)
Sep 14, 2025
Blast - Hitting
20.8
Hand Speed (max)
20.4
Hand Speed (avg)
71.2
Bat Speed (max)
68.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Central Super Sophomore Games (Invite-Only)
Aug 2, 2025
Blast - Hitting
20.5
Hand Speed (max)
20.1
Hand Speed (avg)
68.2
Bat Speed (max)
66.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
MOKAN Summer ID
Jul 1, 2025
Blast - Hitting
19.3
Hand Speed (max)
18.3
Hand Speed (avg)
63.7
Bat Speed (max)
59.6
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
MOKAN Preseason All-State (Invite-Only)
Feb 9, 2025
Blast - Hitting
21.0
Hand Speed (max)
19.1
Hand Speed (avg)
71.6
Bat Speed (max)
67.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Mac N Seitz Scout Day
Nov 9, 2024
Blast - Hitting
17.1
Hand Speed (max)
16.3
Hand Speed (avg)
64.0
Bat Speed (max)
62.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2025
2024
Fastball
Velocity Max
84.3
Fastball
Velocity Avg
80.8
Fastball
Spin Rate Avg
1687
Fastball
Spin Score Avg
20.9
Fastball
Total Movement Avg
Curveball
Velocity Avg
69.9
Curveball
Spin Rate Avg
1799
Curveball
Total Movement Avg
Changeup
Velocity Avg
75.3
Changeup
Spin Rate Avg
1696
Changeup
Total Movement Avg
Slider
Velocity Avg
69.1
Slider
Spin Rate Avg
1917
Slider
Total Movement Avg
Fastball
Velocity Max
73.6
Fastball
Velocity Avg
71.7
Fastball
Spin Rate Avg
1648
Fastball
Spin Score Avg
23.0
Fastball
Total Movement Avg
Curveball
Velocity Avg
58.2
Curveball
Spin Rate Avg
1921
Curveball
Total Movement Avg
Changeup
Velocity Avg
63.5
Changeup
Spin Rate Avg
1701
Changeup
Total Movement Avg
Kansas Fall Games (Invite Only)
Sep 14, 2025
Trackman - Fastball
84.3
Velocity (max)
80.4 - 83.2
Velo Range
77.8
Eff Velocity (avg)
1,847
Spin Rate (max)
1,677
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
72.3
Velocity (max)
69.9 - 71.6
Velo Range
66.4
Eff Velocity (avg)
1,927
Spin Rate (max)
1,722
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
76.4
Velocity (max)
76.2 - 76.4
Velo Range
1,788
Spin Rate (max)
1,739
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Central Super Sophomore Games (Invite-Only)
Aug 2, 2025
Trackman - Fastball
82.5
Velocity (max)
79.2 - 81.5
Velo Range
78.8
Eff Velocity (avg)
1,878
Spin Rate (max)
1,696
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
70.8
Velocity (max)
68.5 - 70.5
Velo Range
67.3
Eff Velocity (avg)
2,042
Spin Rate (max)
1,905
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
MOKAN Summer ID
Jul 1, 2025
Trackman - Fastball
80.4
Velocity (max)
79.7 - 80.4
Velo Range
77.8
Eff Velocity (avg)
1,673
Spin Rate (max)
1,658
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Curveball
67.5
Velocity (max)
67.5 - 67.5
Velo Range
65.4
Eff Velocity (avg)
2,146
Spin Rate (max)
2,030
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Slider
67.8
Velocity (max)
67.4 - 67.8
Velo Range
65.5
Eff Velocity (avg)
1,970
Spin Rate (max)
1,959
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
75.3
Velocity (max)
73.7 - 75.3
Velo Range
73.0
Eff Velocity (avg)
1,748
Spin Rate (max)
1,667
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
MOKAN Rising Stars ID
Jun 18, 2024
Trackman - Fastball
73.6
Velocity (max)
70.2 - 73.2
Velo Range
71.0
Eff Velocity (avg)
1,742
Spin Rate (max)
1,648
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
59.3
Velocity (max)
57.3 - 59.2
Velo Range
57.4
Eff Velocity (avg)
1,978
Spin Rate (max)
1,921
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
64.7
Velocity (max)
62.6 - 64.6
Velo Range
63.4
Eff Velocity (avg)
1,784
Spin Rate (max)
1,701
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

2024
RSi
Vertical Jump
MOKAN Rising Stars ID
Jun 18, 2024
Swift
2.01
RSI (max)
25.3
Jump Height (max)
2025
2024
10 Yard Dash
1.59
30 Yard Dash
3.86
60 Yard Dash
6.94
Top Speed (MPH)
RSI
Vertical Jump
30 Yard Dash
4.13
Kansas Fall Games (Invite Only)
Sep 14, 2025
Vald
1.60
10-yd
3.86
30-yd
6.94
60-yd
19.9
Run speed (max)
Central Super Sophomore Games (Invite-Only)
Aug 2, 2025
Vald
1.86
10-yd
4.13
30-yd
7.40
60-yd
18.8
Run speed (max)
1.72
RSI (max)
25.2
Jump Height (max)
MOKAN Summer ID
Jul 1, 2025
Vald
1.66
10-yd
3.98
30-yd
7.14
60-yd
19.4
Run speed (max)
1.31
RSI (max)
26.3
Jump Height (max)
MOKAN Preseason All-State (Invite-Only)
Feb 9, 2025
Vald
1.81
10-yd
4.12
30-yd
0.97
RSI (max)
23.0
Jump Height (max)

Vizual Edge

2025
Edge Score
81.33

Pitch Ai

Notes

Comments

7/01/25
INF/RHP William Pepper (Spring Hill, 2028) continues to trend upward as one of the fastest-rising prospects in Kansas’ 2028 class, and Tuesday’s look only strengthened that narrative. In the midst of a breakout summer, Pepper continues to add strength and polish to his game on both sides of the ball. He saw a jump in exit velocity during BP, peaking at 93.9 mph and averaging 88.3 mph per batted ball. Defensively, he showed arm strength across the diamond, reaching 86 mph on his firmest throw. On the mound, the soon-to-be sophomore pitched in the low-80s (T82.5 mph) and mixed in a 68–70 mph slider. With steady progress and tools that continue to trend upward, Pepper is a name to follow in Kansas’ 2028 class that will look to make a big impact next spring in his second year with the Broncos.
2/09/25

William Pepper, Spring Hill (KS), 2028
Positional Profile: SS/RHP
Body: 5-11, 151-pounds. Athletic wiry build with room for added strength.
Hit: RHH. Crouched slightly open setup with a balanced base, weight centered, and quiet hands. Uses a short leg lift trigger working back to even. Short to the zone, long through the zone with a flat path, some barrels, power present. 67.3 mph bat speed with 6 G's of rotational acceleration.
Power: 90 max exit velocity, averaged 86.3 mph. 314' max distance.
Arm: RH. INF-78 mph.
Defense: Confident athletic actions defensively.
ATH: 1.81 and 4.12 in the 10 and 30 yard splits. 23.00 max vertical.
Vizual Edge: 67.09 Edge Score

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Physical

2025
2024
Grip Strgth (LH)
Grip Strgth (RH)
Grip Strgth (LH)
Grip Strgth (RH)
Kansas Fall Games (Invite Only)
Sep 14, 2025
Physical - Athlete
5' 11"
Ht
170.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)
Central Super Sophomore Games (Invite-Only)
Aug 2, 2025
Physical - Athlete
6' 1"
Ht
173.3
Wt
Grip Strgth (RH)
Grip Strgth (LH)
MOKAN Summer ID
Jul 1, 2025
Physical - Athlete
6' 0"
Ht
166.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)
MOKAN Preseason All-State (Invite-Only)
Feb 9, 2025
Physical - Athlete
5' 11"
Ht
151.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)
MOKAN Rising Stars ID
Jun 18, 2024
Physical - Athlete
5' 7"
Ht
133.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)