87.3
Velocity (max)
3/21/26
CLASS OF 2027
RHP
RHP
Mason
Grafwallner
Time 4 Learning Charter (HS) • WI
5' 7" • 220.2LBS
R/R • 18yr 5mo
Travel Team: Halos national/Orioles Scout 2027
5' 7" • 220.2LBSR/R • 18yr 5mo
Travel Team: Halos national/Orioles Scout 2027
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
85.7 - 87.1
Velo Range
3/21/26
2246
Spin Rate (avg)
3/21/26
Changeup
80 - 82
Velo Range
3/21/26
1475
Spin Rate (avg)
3/21/26
Curveball
72 - 74
Velo Range
3/21/26
2571
Spin Rate (avg)
3/21/26
Positional Tools
Hitting
Hitting
Pitching
2026
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
86.4
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).
2246
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.
26.0
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).
72.8
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).
2571
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).
80.9
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).
1475
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).
Sinker
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
85.9
Sinker
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).
2152
Sinker
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Milwaukee Preseason ID
Mar 21, 2026
Trackman - Fastball
87.3
Velocity (max)
85.7 - 87.1
Velo Range
84.4
Eff Velocity (avg)
2,395
Spin Rate (max)
2,246
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
74.0
Velocity (max)
72.0 - 73.7
Velo Range
69.7
Eff Velocity (avg)
2,612
Spin Rate (max)
2,571
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
82.0
Velocity (max)
80.1 - 81.8
Velo Range
78.8
Eff Velocity (avg)
1,506
Spin Rate (max)
1,475
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Sinker
86.0
Velocity (max)
85.8 - 86.0
Velo Range
83.5
Eff Velocity (avg)
2,162
Spin Rate (max)
2,152
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Pitch Scores
Pitching Velos
2026
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
86.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
81.0
Game Performance
2026
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Vizual Edge
Pitch Ai
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