77.2
Velocity (max)
6/02/24
CLASS OF 2025
RHP
OF
Mason
Chaleff
West Islip (HS) • NY
5' 8" • 140LBS
S/R • 17yr
Travel Team: Beast LI
5' 8" • 140LBS
S/R • 17yr
Travel Team: Beast LI
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
74.7 - 77.2
Velo Range
6/02/24
2251
Spin Rate (avg)
6/04/23
Changeup
69 - 71
Velo Range
6/02/24
1730
Spin Rate (avg)
2/23/23
Curveball
67.3 - 69.1
Velo Range
2/23/23
2325
Spin Rate (avg)
2/23/23
Slider
64 - 68
Velo Range
6/02/24
2411
Spin Rate (avg)
6/02/24
83.8
Exit Velocity (max)
6/02/24
71.7
Exit Velocity (avg)
6/02/24
281
Distance (max)
6/02/24
42
Sweet Spot %
6/04/23
20.3
Hand Speed (max)
6/02/24
65.9
Bat Speed (max)
6/02/24
19.7
Rot. Acc (max)
6/04/23
-
Hard Hit %
6.84
60
6/02/24
-
30-yd
-
10-yd
18
Run speed (max)
6/02/24
73
INF Velo
6/04/23
75
OF Velo
6/02/24
-
C Velo
-
Pop Time
Positional Tools
2024
2023
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
6.84
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
75.0
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.
12.3
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
73.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
74.0
Hitting
2024
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
83.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
71.7
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
281
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
162
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
20.4
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).
80.8
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
67.4
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
259
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
142
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
21.5
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.
2024 Team Beast Scout Day
Jun 2, 2024
Trackman - Hitting
83.8
Exit Velocity (max)
71.7
Exit Velocity (avg)
162
Distance (avg)
281
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2023 Team Beast Scout Day
Jun 4, 2023
Trackman - Hitting
80.8
Exit Velocity (max)
67.4
Exit Velocity (avg)
142
Distance (avg)
259
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2024
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.3
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
18.8
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
65.9
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
58.6
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.
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
20.2
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.3
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
61.3
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
58.8
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.
2024 Team Beast Scout Day
Jun 2, 2024
Blast - Hitting
20.3
Hand Speed (max)
18.8
Hand Speed (avg)
65.9
Bat Speed (max)
58.6
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2023 Team Beast Scout Day
Jun 4, 2023
Blast - Hitting
20.2
Hand Speed (max)
19.3
Hand Speed (avg)
61.3
Bat Speed (max)
58.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
77.2
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).
2177
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.
28.6
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).
69.5
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).
1195
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).
66.0
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).
2411
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
74.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
73.6
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).
2189
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.
29.8
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).
68.2
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).
2325
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).
68.4
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).
1667
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).
61.3
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).
2217
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).
2024 Team Beast Scout Day
Jun 2, 2024
Trackman - Fastball
77.2
Velocity (max)
74.7 - 77.2
Velo Range
74.4
Eff Velocity (avg)
2,344
Spin Rate (max)
2,177
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
67.9
Velocity (max)
64.3 - 67.7
Velo Range
63.5
Eff Velocity (avg)
2,476
Spin Rate (max)
2,411
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)
68.9 - 70.6
Velo Range
67.7
Eff Velocity (avg)
1,255
Spin Rate (max)
1,195
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
2023 Team Beast Scout Day
Jun 4, 2023
Trackman - Fastball
73.5
Velocity (max)
72.7 - 73.3
Velo Range
70.7
Eff Velocity (avg)
2,343
Spin Rate (max)
2,251
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
63.3
Velocity (max)
60.1 - 62.6
Velo Range
58.3
Eff Velocity (avg)
2,266
Spin Rate (max)
2,217
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
66.0
Velocity (max)
64.3 - 66.0
Velo Range
63.0
Eff Velocity (avg)
1,578
Spin Rate (max)
1,541
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2023 Preseason ID: Downstate - Session 1
Feb 23, 2023
Trackman - Fastball
74.8
Velocity (max)
73.4 - 74.5
Velo Range
69.9
Eff Velocity (avg)
2,235
Spin Rate (max)
2,154
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Curveball
69.5
Velocity (max)
67.3 - 69.1
Velo Range
63.9
Eff Velocity (avg)
2,466
Spin Rate (max)
2,325
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
71.4
Velocity (max)
69.0 - 70.9
Velo Range
66.2
Eff Velocity (avg)
1,934
Spin Rate (max)
1,730
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
2023
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
Slider
Hammer+
A hammer breaking ball drops vertically with velocity through the zone, or 12-to-6 movement. Hammer+ of 100 is MLB average.
Slider
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).
77.0
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
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
66.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
74.0
Fastball
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)
65.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
61.5
Game Performance
2024
2023
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.84
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.23
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Visual Edge
Pitch Ai
Notes
News
Comments
Draft Reports
Contact
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Physical: 5-foot-8, 140 pounds; Slight, build.
Pitching: Uses a glove side setup working primarily from the stretch. Varies leg lifts with shoulders outside the hips. Has a long stride landing inline with the plate. Short take back while arm stays in line with 2B; high 3/4 slot. Spins off 1B side with finish. FB: Peak velo of 75 MPH, while sitting 73-75 MPH; arm side run. CB: 67-70 MPH; early action. CH: 69-71 MPH; runs.