82.4
Velocity (max)
10/21/23
CLASS OF 2025
RHP
3B
Steffen
Kennedy-Bierbrodt
Niwot (HS) • CO
6' 4" • 200LBS
L/R • 17yr 5mo
Travel Team: Rough Riders
6' 4" • 200LBS
L/R • 17yr 5mo
Travel Team: Rough Riders
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
75.2 - 82.4
Velo Range
10/21/23
2148
Spin Rate (avg)
10/21/23
Changeup
73.2 - 73.7
Velo Range
10/21/23
2152
Spin Rate (avg)
10/21/23
Curveball
58 - 63
Velo Range
6/20/23
2122
Spin Rate (avg)
10/21/23
Slider
68 - 72
Velo Range
10/22/22
2157
Spin Rate (avg)
10/21/23
95.6
Exit Velocity (max)
6/20/23
85.6
Exit Velocity (avg)
6/20/23
364
Distance (max)
10/21/23
44
Sweet Spot %
10/22/22
23.1
Hand Speed (max)
6/20/23
74.8
Bat Speed (max)
6/20/23
9.7
Rot. Acc (max)
6/20/23
-
Hard Hit %
7.28
60
10/21/23
4.03
30-yd
10/21/23
1.75
10-yd
10/21/23
18.9
Run speed (max)
10/21/23
85
INF Velo
10/21/23
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2023
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.28
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
85.0
Power / Speed Score
A simple calculation that divides the athlete’s Exit Velocity Max by the athlete’s 60 Yard Dash time for the given event year. For example, 98 MPH / 7.00s = 14.00.
13.1
Hitting
2023
2022
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
95.6
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
364
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
196
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
18.3
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).
90.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
77.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
265
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
194
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
25.7
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.
PBR Scout Day: Rockies Scout Team
Oct 21, 2023
Trackman - Hitting
94.1
Exit Velocity (max)
79.8
Exit Velocity (avg)
196
Distance (avg)
364
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Denver Summer Open
Jun 20, 2023
Trackman - Hitting
95.6
Exit Velocity (max)
85.6
Exit Velocity (avg)
195
Distance (avg)
340
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Rockies Scout Day
Oct 22, 2022
Trackman - Hitting
90.2
Exit Velocity (max)
77.2
Exit Velocity (avg)
194
Distance (avg)
265
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
23.1
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
74.8
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
71.4
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.
Denver Summer Open
Jun 20, 2023
Blast - Hitting
23.1
Hand Speed (max)
21.9
Hand Speed (avg)
74.8
Bat Speed (max)
71.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2023
2022
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.4
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
77.3
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).
2091
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.
26.9
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).
67.0
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).
1909
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).
71.8
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).
2013
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).
63.0
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).
2157
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).
Splitter
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
72.1
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).
1370
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).
Sinker
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
75.5
Sinker
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).
2153
Sinker
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).
77.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
76.5
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).
1968
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.
25.7
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
70.3
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).
1814
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).
Splitter
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
68.2
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).
654
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).
PBR Scout Day: Rockies Scout Team
Oct 21, 2023
Trackman - Fastball
82.4
Velocity (max)
75.2 - 82.4
Velo Range
79.2
Eff Velocity (avg)
2,218
Spin Rate (max)
2,148
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
79.7
Velocity (max)
80.0
Eff Velocity (avg)
2,122
Spin Rate (max)
2,122
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Slider
63.0
Velocity (max)
63.0
Eff Velocity (avg)
2,157
Spin Rate (max)
2,157
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
73.7
Velocity (max)
73.2 - 73.7
Velo Range
73.5
Eff Velocity (avg)
2,239
Spin Rate (max)
2,152
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Splitter
79.5
Velocity (max)
79.5
Eff Velocity (avg)
2,129
Spin Rate (max)
2,129
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Sinker
81.3
Velocity (max)
65.9 - 81.3
Velo Range
75.7
Eff Velocity (avg)
2,191
Spin Rate (max)
2,153
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Denver Summer Open
Jun 20, 2023
Trackman - Fastball
79.6
Velocity (max)
74.1 - 78.4
Velo Range
77.7
Eff Velocity (avg)
2,204
Spin Rate (max)
2,067
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
62.8
Velocity (max)
58.4 - 62.8
Velo Range
1,850
Spin Rate (max)
1,802
Spin Rate (avg)
Release Ht (avg)
Spin Score (max)
Trackman - ChangeUp
73.1
Velocity (max)
67.4 - 73.1
Velo Range
72.1
Eff Velocity (avg)
1,890
Spin Rate (max)
1,874
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
70.5
Velocity (max)
68.5 - 70.5
Velo Range
71.0
Eff Velocity (avg)
973
Spin Rate (max)
1,118
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Rockies Scout Day
Oct 22, 2022
Trackman - Fastball
77.8
Velocity (max)
75.4 - 77.7
Velo Range
78.0
Eff Velocity (avg)
2,038
Spin Rate (max)
1,968
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
71.9
Velocity (max)
68.4 - 71.9
Velo Range
68.8
Eff Velocity (avg)
1,838
Spin Rate (max)
1,814
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - Splitter
70.0
Velocity (max)
66.9 - 69.6
Velo Range
67.2
Eff Velocity (avg)
654
Spin Rate (max)
654
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
Pitching Velos
2023
2022
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)
77.2
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
60.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
78.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.5
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.0
Game Performance
2023
2022
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.75
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.03
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.28
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.77
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.21
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Visual Edge
2023
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.
45.32
Pitch Ai
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Positional Profile: RHP/1B
Body: 6-4, 192-pounds. Tall, athletic build.
Delivery: From the stretch middle of the rubber, high leg kick, medium stride, glides down the mound, drives over a firm front side.
Arm Action: RH. Medium arm swing out of a 3/4 arm slot.
FB: T80, 74-78 mph. Stays on plane with some arm side fade, quality spin. T2204, 2067 average rpm.
CB: 58-63 mph. 11/5 shape, rolling action. T1850, 1802 average rpm.
CH: 67-73 mph. Arm side fade and drop. T1890, 1874 average rpm.
SPLT: 69-70 mph. Late drop.
Positional Profile: RHP/1B
Body: 6-4, 192-pounds. Tall, athletic build.
Delivery: From the stretch middle of the rubber, high leg kick, medium stride, glides down the mound, drives over a firm front side.
Arm Action: RH. Medium arm swing out of a 3/4 arm slot.
FB: T80, 74-78 mph. Stays on plane with some arm side fade, quality spin. T2204, 2067 average rpm.
CB: 58-63 mph. 11/5 shape, rolling action. T1850, 1802 average rpm.
CH: 67-73 mph. Arm side fade and drop. T1890, 1874 average rpm.
SPLT: 69-70 mph. Late drop.
Positional Profile: RHP/1B
Body: 6-4, 192-pounds. Tall, athletic build.
Hit: LHH. Slightly bent at the knees, feet shoulder width apart, hands at shoulder, bat angle upright, light bat wiggle. Load onto backside, small leg kick and stride, active lower half, rotational top half, longer to the baseball and through the zone. 71.4 mph bat speed with 6 G’s of rotational acceleration.
Power: 96 max exit velocity, averaged 85.6 mph. 340' max distance. Line drive swing with developing power.
Arm: RH. INF-74 mph. Medium arm swing out of a 3/4 arm slot.
Defense: Prep step, deliberate feet, fluid release, soft hands, fields the ball out front, funnels to chest.
Vizual Edge: 45.32 Edge Score
Positional Profile: RHP/1B
Body: 6-4, 192-pounds. Tall, athletic build.
Hit: LHH. Slightly bent at the knees, feet shoulder width apart, hands at shoulder, bat angle upright, light bat wiggle. Load onto backside, small leg kick and stride, active lower half, rotational top half, longer to the baseball and through the zone. 71.4 mph bat speed with 6 G’s of rotational acceleration.
Power: 96 max exit velocity, averaged 85.6 mph. 340' max distance. Line drive swing with developing power.
Arm: RH. INF-74 mph. Medium arm swing out of a 3/4 arm slot.
Defense: Prep step, deliberate feet, fluid release, soft hands, fields the ball out front, funnels to chest.
Vizual Edge: 45.32 Edge Score