21.8
Hand Speed (max)
6/18/24
CLASS OF 2026
3B
RHP
Mason
Grafwallner
Greenfield (HS) • WI
5' 7" • 221.8LBS
R/R • 17yr 2mo
Travel Team: Midwest halos
5' 7" • 221.8LBSR/R • 17yr 2mo
Travel Team: Midwest halos
Rankings
2026 National
Rankings available to Premium Subscriber
2026 State
Rankings available to Premium Subscriber
Commitment
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Best Of Stats
72.7
Bat Speed (max)
6/18/24
25.9
Rot. Acc (max)
6/18/24
44
Hard Hit %
6/18/24
92.5
Exit Velocity (max)
6/18/24
87.8
Exit Velocity (avg)
6/18/24
349
Distance (max)
6/18/24
67
Sweet Spot %
6/18/24
8.19
60
6/18/24
-
30-yd
-
10-yd
-
Run speed (max)
86
INF Velo
6/18/24
-
OF Velo
-
C Velo
-
Pop Time
Fastball
83.3
Velocity (max)
6/18/24
81.3 - 83.1
Velo Range
6/18/24
2193
Spin Rate (avg)
6/18/24
Changeup
73.6 - 76.1
Velo Range
6/18/24
1610
Spin Rate (avg)
6/18/24
Curveball
66 - 70
Velo Range
6/29/23
2176
Spin Rate (avg)
6/18/24
Positional Tools
2024
2022
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.19
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
86.0
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.
11.3
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.26
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
71.0
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.
10.6
Hitting
2024
2022
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
92.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
87.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
349
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
243
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
24.4
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.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
87.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
80.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
282
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
186
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
16.1
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.
Milwaukee Summer ID
Jun 18, 2024
Trackman - Hitting
92.5
Exit Velocity (max)
87.8
Exit Velocity (avg)
243
Distance (avg)
349
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Rising Stars ID
Apr 5, 2022
Trackman - Hitting
87.8
Exit Velocity (max)
80.2
Exit Velocity (avg)
186
Distance (avg)
282
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2024
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
21.8
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
72.7
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
71.6
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.
Milwaukee Summer ID
Jun 18, 2024
Blast - Hitting
21.8
Hand Speed (max)
20.9
Hand Speed (avg)
72.7
Bat Speed (max)
71.6
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2024
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
83.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
82.2
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).
2193
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.
26.7
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).
64.9
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).
2176
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).
74.9
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).
1610
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).
Milwaukee Summer ID
Jun 18, 2024
Trackman - Fastball
83.3
Velocity (max)
81.3 - 83.1
Velo Range
80.5
Eff Velocity (avg)
2,284
Spin Rate (max)
2,193
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
66.3
Velocity (max)
64.0 - 65.8
Velo Range
62.2
Eff Velocity (avg)
2,261
Spin Rate (max)
2,176
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
76.6
Velocity (max)
73.6 - 76.1
Velo Range
73.9
Eff Velocity (avg)
1,712
Spin Rate (max)
1,610
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
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
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
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
83.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
82.0
Curveball
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
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
75.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
79.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.2
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.5
Game Performance
2024
RSi
The reactive strength index measurement of an athlete's explosiveness by comparing their jump height to the ground contact time in between their jumps. On a scale of 0-5.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Visual Edge
2024
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.
53.93
Pitch Ai
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RHP Mason Grafwallner (Greenfield, 2026) is a strong right-hander with the ability to move down the mound, finding consistency by working from the stretch only. It’s a medium leg lift into a high-¾ slot, and a fluid arm. The fastball was 81-83 mph with backspin and carry, featuring occasional cut. His mid-60s curveball had late 12/6 break, a quality pitch when thrown down in the zone. Grafwallner also showed a changeup with slight sinking action and arm-side run at 74-76.
Positional Profile: 3B/RHP
Body: 5-8, 215-pounds. Strong build, strength throughout.
Hit: RHH. Narrow base, falls into strong atheltic hitting position on time. Leverage out front, uphill path through the zone, pullside approach. 71.6 mph bat speed with 23 G’s of rotational acceleration.
Power: 92 max exit velocity, averaged 87.8 mph. 349’ max distance.
Arm: RH. INF - 86 mph. Compact arm action, works downhill through throw, some carry.
Defense: Soft hands with steady actions, shuffle to throw.
Run: 8.19 runner in the 60.
Positional Profile: 3B/RHP Body: 5-8, 215-pounds. Strong build, strength throughout.
Delivery: Stretch only, pretty good mover for his size, miedium leg lift.
Arm Action: RH. Fluid on the back-end, high-3/4 slot with some finish.
FB: T83, 81-83 mph. True backspin, some carry, depth to glove side on the finish. T2284, 2193 average rpm.
CB: 64-66 mph. 12/6, late break, good when down in zone. T2261, 2176 average rpm.
CH: 74-76 mph. Firm with a bit of sink/ASR. T1712, 1610 average rpm.