78.7
Velocity (max)
8/19/25
CLASS OF 2026
RHP
OF
Isaac
Shatsoff
Waltham (HS) • MA
5' 8" • 155LBS
R/R • 18yr
Travel Team: Boston Prime Orange
5' 8" • 155LBS
R/R • 18yr
Travel Team: Boston Prime Orange
Rankings
2026 National
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
74.9 - 78.3
Velo Range
8/19/25
2058
Spin Rate (avg)
8/19/25
Changeup
69.6 - 71.8
Velo Range
8/19/25
1602
Spin Rate (avg)
3/09/25
Curveball
66.4 - 69
Velo Range
3/09/25
2097
Spin Rate (avg)
3/09/25
Slider
67.6 - 71.1
Velo Range
8/19/25
2169
Spin Rate (avg)
8/19/25
82.9
Exit Velocity (max)
1/27/24
71
Exit Velocity (avg)
1/27/24
263
Distance (max)
1/27/24
40
Sweet Spot %
1/27/24
77
INF Velo
1/27/24
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2024
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Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
77.0
Hitting
2024
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
82.9
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
71.0
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
263
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
153
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
22.2811
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.
Scout Day: Boston Prime 1.27.24
Jan 27, 2024
Trackman - Hitting
82.9
Exit Velocity (max)
71.0
Exit Velocity (avg)
153
Distance (avg)
263
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
Pitching
2025
2024
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
78.7
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
76.9
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).
2004
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.
26.1
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).
67.7
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).
2097
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).
69.9
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).
1566
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).
69.3
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).
2169
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).
75.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
74.3
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).
1838
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.
24.7
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
67.7
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).
1798
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).
2025 New England Unsigned Senior Games (Invite Only)
Aug 19, 2025
Trackman - Fastball
78.7
Velocity (max)
74.9 - 78.3
Velo Range
72.8
Eff Velocity (avg)
2,176
Spin Rate (max)
2,058
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
71.4
Velocity (max)
67.6 - 71.1
Velo Range
64.6
Eff Velocity (avg)
2,337
Spin Rate (max)
2,169
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
72.2
Velocity (max)
69.6 - 71.8
Velo Range
67.7
Eff Velocity (avg)
1,598
Spin Rate (max)
1,500
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Scout Day: Boston Prime 3.9.25
Mar 9, 2025
Trackman - Fastball
78.0
Velocity (max)
76.6 - 77.7
Velo Range
78.3
Eff Velocity (avg)
2,089
Spin Rate (max)
1,939
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
69.2
Velocity (max)
66.4 - 69.0
Velo Range
67.8
Eff Velocity (avg)
2,135
Spin Rate (max)
2,097
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
70.3
Velocity (max)
68.9 - 70.1
Velo Range
71.0
Eff Velocity (avg)
2,130
Spin Rate (max)
1,602
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Scout Day: Boston Prime 1.27.24
Jan 27, 2024
Trackman - Fastball
75.0
Velocity (max)
73.7 - 74.9
Velo Range
70.1
Eff Velocity (avg)
1,875
Spin Rate (max)
1,838
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
68.8
Velocity (max)
66.9 - 68.4
Velo Range
63.4
Eff Velocity (avg)
2,008
Spin Rate (max)
1,798
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
Vizual Edge
Pitch Ai
Notes
News
Comments
Draft Reports
Contact
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Isaac Shatsoff: RHP/3B, (2026) Waltham High School, MA. 5-foot-8, 145-pound lean frame. Capable in the box, Shatsoff's best exit velocity was 83 mph. Begins in a balanced athletic stance with a wrapping load, then uses a small stride. Has developing bat speed, uphill loose swing plane and good extension on his finish. He found multiple barrels with loud contact. Line drive approach. Solid in the infield, his position velocity was registered at 77 mph; shows a natural exchange, developing athletic feet, and developing soft hands. Laterally, movements were developing and fielded the ball out front. Showed a low ¾ slot and consistent accuracy to the bag. Capable on the mound, showed developing arm speed, he had low ¾ arm angle with a consistent arm action. Feel type pitcher who uses some effort. In line shoulders and a consistent balance point. Lands closed with a falling off finish. Threw his fastball 74-75 mph; had arm side control and running sinking action. (Max spin 1875; Avg 1837). Had slurvey action and glove side control on his slider (67-68). (Max spin 2008; Avg 1797).