@jacob_hammer5 85.6
Velocity (max)
2/23/25
CLASS OF 2026
RHP
Jacob
Hammer
Montville (HS) • NJ
5' 10" • 170LBS
R/R • 17yr 11mo
Travel Team: Morris County Cubs
5' 10" • 170LBS
R/R • 17yr 11mo
Travel Team: Morris County Cubs
Rankings
2026 National
Rankings available to Premium Subscriber
2026 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
84.4 - 85.6
Velo Range
2/23/25
2281
Spin Rate (avg)
10/28/23
Changeup
79.1 - 80.2
Velo Range
7/01/25
1795
Spin Rate (avg)
6/22/24
Curveball
67 - 73
Velo Range
6/22/24
2686
Spin Rate (avg)
10/28/23
Slider
73 - 73
Velo Range
6/22/24
2572
Spin Rate (avg)
6/22/24
22.1
Hand Speed (max)
6/22/24
70
Bat Speed (max)
6/22/24
15.4
Rot. Acc (max)
6/22/24
-
Hard Hit %
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Positional Tools
Hitting
Hitting
2024
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Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.1
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.1
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
70.0
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
67.7
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 NJ Top Prospect Games (Session II)
Jun 22, 2024
Blast - Hitting
22.1
Hand Speed (max)
21.1
Hand Speed (avg)
70.0
Bat Speed (max)
67.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2025
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.6
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.8
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).
2127
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.
25.4
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).
70.0
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).
2314
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).
78.6
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).
1579
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
83.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
80.9
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).
2069
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.
25.6
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).
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
69.9
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).
2558
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).
77.1
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).
1795
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).
73.2
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).
2572
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).
81.9
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
81.2
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).
2281
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.
28.1
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).
69.7
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).
2686
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).
76.4
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).
1694
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).
New Jersey Top Prospect Games - Session I (Invite-Only)
Jul 1, 2025
Trackman - Fastball
85.0
Velocity (max)
82.3 - 84.6
Velo Range
83.9
Eff Velocity (avg)
2,256
Spin Rate (max)
2,121
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
72.8
Velocity (max)
68.8 - 71.2
Velo Range
69.6
Eff Velocity (avg)
2,723
Spin Rate (max)
2,289
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
80.2
Velocity (max)
79.1 - 80.2
Velo Range
79.2
Eff Velocity (avg)
1,838
Spin Rate (max)
1,615
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
2025 NJ Preseason All-State: Upperclass (2025-2026s)
Feb 23, 2025
Trackman - Fastball
85.6
Velocity (max)
84.4 - 85.6
Velo Range
83.0
Eff Velocity (avg)
2,252
Spin Rate (max)
2,152
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
71.4
Velocity (max)
68.8 - 71.4
Velo Range
67.7
Eff Velocity (avg)
2,518
Spin Rate (max)
2,395
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
79.2
Velocity (max)
77.1 - 78.6
Velo Range
75.7
Eff Velocity (avg)
1,658
Spin Rate (max)
1,550
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
2024 NJ Top Prospect Games (Session II)
Jun 22, 2024
Trackman - Fastball
83.8
Velocity (max)
79.0 - 82.7
Velo Range
80.7
Eff Velocity (avg)
2,267
Spin Rate (max)
2,069
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
73.0
Velocity (max)
67.0 - 72.8
Velo Range
68.7
Eff Velocity (avg)
2,767
Spin Rate (max)
2,558
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
73.2
Velocity (max)
72.0
Eff Velocity (avg)
2,572
Spin Rate (max)
2,572
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
77.8
Velocity (max)
76.3 - 77.8
Velo Range
76.8
Eff Velocity (avg)
1,897
Spin Rate (max)
1,795
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
2023 NJ Last Chance Open
Oct 28, 2023
Trackman - Fastball
81.9
Velocity (max)
80.6 - 81.8
Velo Range
81.7
Eff Velocity (avg)
2,417
Spin Rate (max)
2,281
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
70.5
Velocity (max)
68.6 - 70.5
Velo Range
69.0
Eff Velocity (avg)
2,845
Spin Rate (max)
2,686
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
77.5
Velocity (max)
75.6 - 77.4
Velo Range
75.9
Eff Velocity (avg)
1,812
Spin Rate (max)
1,694
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
2025
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.
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
2025
2024
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
83.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
79.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
84.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
81.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.0
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)
81.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.5
Game Performance
2025
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Vizual 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.
47.5
Pitch Ai
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Positional Profile: RHP
Body: 5-10, 170-pounds. Wiry and athletic build.
Delivery: Slow pace to start his delivery, maintains rhythm and tempo. Stride direction stays in line, gets over a strong brace leg. Uphill shoulder tilt. Clean, repeatable mechanics.
Arm Action: RH. Long and loose, high 3/4 slot. Creates some downhill angle.
FB: T85, 82-85 mph. Showed some armside run. T2256, 2121 average rpm.
CB: 69-71 mph. Tight spinner, downer action. T2723, 2289 average rpm.
CH: 79-80 mph. Depth at times, maintains his arm speed. T1838, 1615 average rpm.
ATH: 18.40 max vertical.
Positional Profile: RHP
Body: 5-10, 170-pounds.
Hit: RHH
Arm: RH.
ATH: 18.40 max vertical.
Positional Profile: RHP
Body: 5-10, 170-pounds. Compact athlete.
Delivery: Longer windup, maintains his rhythm and tempo. Strong lower half, gets over the brace leg. Uphill shoulder tilt.
Arm Action: RH. Clean AA. High, over-the-top slot.
FB: T84, 79-83 mph. Creates some downhill tilt. T2267, 2069 average rpm.
CB: 67-73 mph. Tight spinner, s/m ability. T2767, 2558 average rpm.
SL: 73-73 mph. Horizontal tilt. T2572, 2572 average rpm.
CH: 76-78 mph. Straight fade. T1897, 1795 average rpm.
Positional Profile: RHP
Body: 5-10, 170-pounds. Compact athlete.
Hit: RHH
Arm: RH.
Vizual Edge: 47.5 Edge Score
Positional Profile: RHP
Body: 5-10, 170-pounds. Compact, athletic frame.
Delivery: Gradual start to the delivery, more aggressive after his hand-break. Deep sink into the back hip, rides the mound. Uphill shoulder tilt.
Arm Action: RH. Long and clean, higher slot nearly over-the-top.
FB: T82, 81-82 mph. Some downhill angle. T2417, 2281 average rpm.
CB: 69-71 mph. Tight spinner, late downer tilt. T2845, 2686 average rpm.
CH: 76-77 mph. Run and sink occasionally. T1812, 1694 average rpm.
Positional Profile: RHP
Body: 5-10, 170-pounds. Compact, athletic frame.
Hit: RHH
Arm: RH.