91
Velocity (max)
10/10/25
CLASS OF 2024
William
Grizzle
Southern Idaho
Mountain View (HS) • ID
6' 3" • 190LBS
Mountain View (HS) • ID
6' 3" • 190LBS
Rankings
2024 National
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
90 - 90.9
Velo Range
10/10/25
2346
Spin Rate (avg)
10/10/25
Changeup
80.2 - 80.8
Velo Range
10/10/25
1790
Spin Rate (avg)
10/10/25
Slider
77.7 - 78.6
Velo Range
10/10/25
2645
Spin Rate (avg)
10/10/25
Positional Tools
Hitting
Hitting
Pitching
2025
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
91.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
90.5
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).
2346
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.
25.9
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).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
80.5
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).
1790
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.1
Slider
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).
2645
Slider
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
CSI Scout Day
Oct 10, 2025
Trackman - Fastball
91.0
Velocity (max)
90.0 - 90.9
Velo Range
89.6
Eff Velocity (avg)
2,480
Spin Rate (max)
2,346
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
78.6
Velocity (max)
77.7 - 78.6
Velo Range
76.2
Eff Velocity (avg)
2,705
Spin Rate (max)
2,645
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
80.8
Velocity (max)
80.2 - 80.8
Velo Range
79.6
Eff Velocity (avg)
1,845
Spin Rate (max)
1,790
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
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
Pitching Velos
Game Performance
Vizual Edge
Pitch Ai
Notes
Comments
Draft Reports
Contact
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