@rogersielaff 
81.1
Velocity (max)
6/11/25
CLASS OF 2025
RHP
1B
Roger
Sielaff
Staley (HS) • MO
5' 11" • 215LBS
R/R • 18yr 1mo
Travel Team: Engaged Athletics
5' 11" • 215LBS
R/R • 18yr 1mo
Travel Team: Engaged Athletics
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
79 - 81.1
Velo Range
6/11/25
2087
Spin Rate (avg)
6/11/25
Changeup
73.1 - 74.4
Velo Range
6/11/25
1291
Spin Rate (avg)
2/15/25
Curveball
67.9 - 69.4
Velo Range
6/11/25
2031
Spin Rate (avg)
6/11/25
96.3
Exit Velocity (max)
6/11/25
85.3
Exit Velocity (avg)
2/15/25
328
Distance (max)
2/15/25
63
Sweet Spot %
2/15/25
23.9
Hand Speed (max)
2/15/25
73.6
Bat Speed (max)
2/15/25
19.8
Rot. Acc (max)
2/15/25
58
Hard Hit %
6/11/25
8.00
60-yd
6/11/25
4.36
30-yd
2/15/25
1.72
10-yd
2/15/25
17.2
Run speed (max)
6/11/25
75
INF Velo
6/11/25
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2025
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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).
75.0
Hitting
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
96.3
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
83.1
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
328
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
209
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
17.1676
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.
KCCBL Scout Day
Jun 11, 2025
Trackman - Hitting
96.3
Exit Velocity (max)
81.6
Exit Velocity (avg)
180
Distance (avg)
323
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Engaged Athletics Scout Day
Feb 15, 2025
Trackman - Hitting
92.4
Exit Velocity (max)
85.3
Exit Velocity (avg)
255
Distance (avg)
328
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2025
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
23.9
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.2
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
73.6
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
69.6
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.
Engaged Athletics Scout Day
Feb 15, 2025
Blast - Hitting
23.9
Hand Speed (max)
21.3
Hand Speed (avg)
73.6
Bat Speed (max)
69.6
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.1
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.5
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).
1985
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.
25.3
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).
67.9
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).
1999
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).
Splitter
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
72.7
Splitter
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).
1229
Splitter
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
KCCBL Scout Day
Jun 11, 2025
Trackman - Fastball
81.1
Velocity (max)
79.0 - 81.1
Velo Range
79.1
Eff Velocity (avg)
2,164
Spin Rate (max)
2,087
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
69.6
Velocity (max)
67.9 - 69.4
Velo Range
66.8
Eff Velocity (avg)
2,083
Spin Rate (max)
2,031
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Splitter
74.4
Velocity (max)
73.1 - 74.4
Velo Range
71.8
Eff Velocity (avg)
1,135
Spin Rate (max)
1,136
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Engaged Athletics Scout Day
Feb 15, 2025
Trackman - Fastball
79.4
Velocity (max)
76.4 - 78.3
Velo Range
76.1
Eff Velocity (avg)
2,046
Spin Rate (max)
1,908
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
67.1
Velocity (max)
66.7 - 67.1
Velo Range
65.8
Eff Velocity (avg)
2,037
Spin Rate (max)
1,957
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Splitter
73.3
Velocity (max)
70.0 - 73.3
Velo Range
70.9
Eff Velocity (avg)
947
Spin Rate (max)
1,291
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
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
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.72
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.36
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.0
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vizual Edge
Pitch Ai
Notes
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Comments
Draft Reports
Contact
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