81.4
Velocity (max)
4/10/24
CLASS OF 2028
RHP
1B
Jack
Postma
Barrington (HS) • IL
6' 3" • 180LBS
R/R • 14yr 7mo
Travel Team: Sparks North
6' 3" • 180LBS
R/R • 14yr 7mo
Travel Team: Sparks North
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
77 - 80
Velo Range
6/06/24
1694
Spin Rate (avg)
4/10/24
Changeup
68 - 69
Velo Range
6/06/24
1492
Spin Rate (avg)
4/10/24
Curveball
60 - 64
Velo Range
6/06/24
1650
Spin Rate (avg)
4/10/24
Positional Tools
Hitting
Hitting
Pitching
2024
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.4
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.0
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).
1694
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.
21.7
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).
60.0
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).
1650
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).
66.4
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).
1492
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).
Lockport Rising Stars ID
Apr 10, 2024
Trackman - Fastball
81.4
Velocity (max)
76.3 - 79.7
Velo Range
77.5
Eff Velocity (avg)
1,840
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)
Trackman - Curveball
61.2
Velocity (max)
59.2 - 60.8
Velo Range
59.2
Eff Velocity (avg)
1,733
Spin Rate (max)
1,650
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
67.8
Velocity (max)
65.4 - 67.5
Velo Range
66.5
Eff Velocity (avg)
1,580
Spin Rate (max)
1,492
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
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
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
78.2
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
61.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.2
Game Performance
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Positional Profile: RHP/1B
Body: 6-3, 180-pounds. High-waisted, long-limbed frame, projectable.
Delivery: Slow, controlled, medium leg-lift into balance point, tall/fall lower half.
Arm Action: RH. Long draw out of the glove, releases by ear.
FB: T81, 76-80 mph. Firm out of the hand, plays with some sink, heavy arm-side run at times. T1840, 1694 average rpm.
CB: 59-61 mph. Gradual 11/5 action, has feel for the zone. Got better as the 'pen went on. T1733, 1650 average rpm.
CH: 65-67 mph. Arm-side fade, lands consistently to the arm side. Best of the offspeed offerings. T1580, 1492 average rpm.