@TielkerWill 85.1
Velocity (max)
3/08/26
CLASS OF 2028
RHP
OF
William
Tielker
Zionsville (HS) • IN
6' 0" • 160LBS
R/R • 16yr 2mo
Travel Team: Indiana 15u mustangs national
6' 0" • 160LBS
R/R • 16yr 2mo
Travel Team: Indiana 15u mustangs national
Rankings
2028 National
Rankings available to Premium Subscriber
2028 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
83 - 85
Velo Range
3/08/26
2018
Spin Rate (avg)
3/08/26
Changeup
72 - 75
Velo Range
3/08/26
1483
Spin Rate (avg)
3/08/26
Curveball
72 - 76
Velo Range
3/08/26
2238
Spin Rate (avg)
3/08/26
92.6
Exit Velocity (max)
3/08/26
84.5
Exit Velocity (avg)
3/08/26
298
Distance (max)
3/08/26
40
Sweet Spot %
3/08/26
21.7
Hand Speed (max)
3/08/26
72.3
Bat Speed (max)
3/08/26
12.6
Rot. Acc (max)
3/08/26
13
Hard Hit %
3/08/26
7.32
60-yd
3/08/26
4.04
30-yd
3/08/26
1.72
10-yd
3/08/26
18.7
Run speed (max)
3/08/26
-
INF Velo
92
OF Velo
3/08/26
-
C Velo
-
Pop Time
Positional Tools
2026
2025
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Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
92.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
82.0
Hitting
2026
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
92.6
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
84.5
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
298
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
121
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
8.0863
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.
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
84.7
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
70.6
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
285
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
213
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
42.7227
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.
Preseason All-State: Underclass (Invite Only - 2028 Grads)
Mar 8, 2026
Trackman - Hitting
92.6
Exit Velocity (max)
84.5
Exit Velocity (avg)
121
Distance (avg)
298
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Summer I.D. Games (Invite Only)
Jul 1, 2025
Trackman - Hitting
84.7
Exit Velocity (max)
70.6
Exit Velocity (avg)
213
Distance (avg)
285
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Hitting
2026
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
21.7
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.2
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
72.3
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
68.9
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.
Preseason All-State: Underclass (Invite Only - 2028 Grads)
Mar 8, 2026
Blast - Hitting
21.7
Hand Speed (max)
19.2
Hand Speed (avg)
72.3
Bat Speed (max)
68.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2026
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.1
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
83.7
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).
2018
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.
24.1
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).
73.6
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).
2238
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).
73.1
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).
1483
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).
79.6
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
75.0
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).
1950
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.
26.0
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).
67.4
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).
2200
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).
Preseason All-State: Underclass (Invite Only - 2028 Grads)
Mar 8, 2026
Trackman - Fastball
85.1
Velocity (max)
82.8 - 84.6
Velo Range
81.9
Eff Velocity (avg)
2,244
Spin Rate (max)
2,018
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
75.7
Velocity (max)
71.6 - 75.5
Velo Range
71.7
Eff Velocity (avg)
2,280
Spin Rate (max)
2,238
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
75.4
Velocity (max)
71.7 - 74.6
Velo Range
72.3
Eff Velocity (avg)
1,508
Spin Rate (max)
1,483
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Summer I.D. Games (Invite Only)
Jul 1, 2025
Trackman - Fastball
79.6
Velocity (max)
72.8 - 77.2
Velo Range
75.9
Eff Velocity (avg)
2,118
Spin Rate (max)
1,950
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
68.4
Velocity (max)
66.3 - 68.4
Velo Range
67.2
Eff Velocity (avg)
2,283
Spin Rate (max)
2,200
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
2026
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
2026
2025
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)
84.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.5
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
80.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
75.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.0
Game Performance
2026
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.
4.04
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.32
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.5
Vizual Edge
2026
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.
68.6
Pitch Ai
Notes
News
Comments
7/01/25
ntriguing two-way prospect with a 6-foot, 160-pound frame and clean movement patterns. Right-handed hitter posted an 85 mph max exit velocity with a 285’ peak distance, showing developing strength at the plate. Arm strength plays at 82 mph from the outfield, and he’s a 7.50 runner in the 60. On the mound, works with a clean operation and projects best long-term, topping at 80 mph (73–77) with 2118 spin and feel for a 66–68 mph breaking ball (2283 max spin). A good follow with upside on the bump.
Draft Reports
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