@Jack_siefken 
84.3
Velocity (max)
3/08/26
CLASS OF 2027
RHP
1B
Jack
Siefken
ADM Senior (HS) • IA
6' 3" • 225LBS
R/R • 17yr 11mo
6' 3" • 225LBS
R/R • 17yr 11mo
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
80.3 - 83.6
Velo Range
3/08/26
1879
Spin Rate (avg)
3/08/26
Changeup
71.8 - 75.3
Velo Range
3/08/26
1957
Spin Rate (avg)
3/08/26
Slider
68.5 - 75
Velo Range
3/08/26
2017
Spin Rate (avg)
3/08/26
86.1
Exit Velocity (max)
8/30/23
-
Exit Velocity (avg)
-
Distance (max)
-
Sweet Spot %
7.98
60-yd
8/30/23
-
30-yd
-
10-yd
-
Run speed (max)
74
INF Velo
8/30/23
-
OF Velo
-
C Velo
-
Pop Time
Game Performance
Notes
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Comments
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Positional Profile: RHP/1B
Body: 6-3, 225-pounds.
Arm Action: RH Works from windup and stretch, slow controlled rocker into high leg lift, explodes down the mound from a low ¾ slot, works inline with catcher, repeatable movements throughout pen, shows feel for all pitches
FB: T84, 80-84 mph. T2133, 1879 average rpm.
SL: 69-75 mph. T2109, 2017 average rpm.
CH: 72-75 mph. T2230, 1957 average rpm.