@BolkemaKlayton 
23
Hand Speed (max)
3/07/21
CLASS OF 2024
1B
OF
Klayton
Bolkema
Texas
Davenport North (HS) • IA
5' 10" • 250LBS
L/L • 19yr 11mo
Travel Team: FTB Phillies Scout
Davenport North (HS) • IA
5' 10" • 250LBS
L/L • 19yr 11mo
Travel Team: FTB Phillies Scout
Rankings
2024 National
Rankings available to Premium Subscriber
2024 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
88.1
Bat Speed (max)
2/22/23
27.6
Rot. Acc (max)
3/07/21
100
Hard Hit %
7/27/22
101.9
Exit Velocity (max)
7/27/22
96.1
Exit Velocity (avg)
7/27/22
395
Distance (max)
8/01/21
80
Sweet Spot %
2/22/23
7.42
60-yd
2/22/23
-
30-yd
-
10-yd
-
Run speed (max)
81
INF Velo
3/06/22
81
OF Velo
3/06/22
-
C Velo
-
Pop Time
Fastball
80
Velocity (max)
9/01/20
78 - 79
Velo Range
3/06/22
1538
Spin Rate (avg)
3/06/22
Changeup
69.1 - 71.3
Velo Range
3/06/22
1634
Spin Rate (avg)
3/06/22
Curveball
66.9 - 68.2
Velo Range
3/06/22
2031
Spin Rate (avg)
3/06/22
PBR IA Fall Tournaments 2020
Sep 1, 2020
Positional Tools
2023
2022
2021
2020
2019
Sign in to view rankings 
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.42
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
81.0
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
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.86
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
81.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
81.0
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.
12.6
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.49
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
74.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
79.0
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.
13.2
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.50
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
72.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
74.0
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.
11.5
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.64
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
67.0
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.
10.5
Hitting
2023
2022
2021
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
97.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
90.8
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
350
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
278
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
22.2
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).
99.1
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
87.4
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
354
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
224
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
25.3
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).
99.0
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
86.9
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
395
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
265
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
30.7
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 Midwest ProCase
Feb 22, 2023
Trackman - Hitting
97.2
Exit Velocity (max)
90.8
Exit Velocity (avg)
278
Distance (avg)
350
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2022 PBR Future Games
Jul 27, 2022
Trackman - Hitting
101.9
Exit Velocity (max)
96.1
Exit Velocity (avg)
259
Distance (avg)
380
Distance (max)
Hard Hit %
Barrel %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
PBR IA Preseason All-State (Invite Only)
Mar 6, 2022
Trackman - Hitting
99.1
Exit Velocity (max)
87.4
Exit Velocity (avg)
224
Distance (avg)
354
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
PBR IA Underclass Prospect Games- 2023 & 2024 Grads (Invite Only)
Aug 1, 2021
Trackman - Hitting
99.0
Exit Velocity (max)
89.0
Exit Velocity (avg)
305
Distance (avg)
395
Distance (max)
Hard Hit %
Barrel %
Sweet Spot %
Line Drive %
Fly Ball %
PBR IA Preseason All-State (Invite Only)
Mar 7, 2021
Trackman - Hitting
94.6
Exit Velocity (max)
84.6
Exit Velocity (avg)
221
Distance (avg)
333
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2023
2022
2021
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.5
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.7
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
88.1
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
78.0
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.
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.7
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.7
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
82.4
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
71.5
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.
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
23.0
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
21.0
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
79.8
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
74.4
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.
PBR Midwest ProCase
Feb 22, 2023
Blast - Hitting
22.5
Hand Speed (max)
19.7
Hand Speed (avg)
88.1
Bat Speed (max)
78.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2022 PBR Future Games
Jul 27, 2022
Blast - Hitting
21.5
Hand Speed (max)
20.4
Hand Speed (avg)
70.6
Bat Speed (max)
67.2
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
PBR IA Preseason All-State (Invite Only)
Mar 6, 2022
Blast - Hitting
22.7
Hand Speed (max)
21.2
Hand Speed (avg)
82.4
Bat Speed (max)
77.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
PBR IA Underclass Prospect Games- 2023 & 2024 Grads (Invite Only)
Aug 1, 2021
Blast - Hitting
21.7
Hand Speed (max)
21.4
Hand Speed (avg)
79.8
Bat Speed (max)
77.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
PBR IA Preseason All-State (Invite Only)
Mar 7, 2021
Blast - Hitting
23.0
Hand Speed (max)
20.7
Hand Speed (avg)
78.5
Bat Speed (max)
71.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2022
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
79.4
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.4
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).
1538
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.
19.6
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).
67.5
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).
2031
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).
70.2
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).
1634
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).
PBR IA Preseason All-State (Invite Only)
Mar 6, 2022
Trackman - Fastball
79.4
Velocity (max)
78.0 - 79.0
Velo Range
76.4
Eff Velocity (avg)
1,712
Spin Rate (max)
1,538
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
68.4
Velocity (max)
66.9 - 68.2
Velo Range
65.5
Eff Velocity (avg)
2,099
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 %
Trackman - ChangeUp
71.3
Velocity (max)
69.1 - 71.3
Velo Range
69.1
Eff Velocity (avg)
1,715
Spin Rate (max)
1,634
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
2022
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
2020
2019
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
76.0
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)
60.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
61.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
71.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
69.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
56.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
64.5
Game Performance
Vizual Edge
2022
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.
68.74
Pitch Ai
2022
Arm Speed
The maximum speed, in the direction of home plate, that the wrist is traveling. Measured in meters per second (m/s)
Arm Slot
Angle of the forearm relative to the ground between maximum external rotation (MER) and ball release (BR). Which can be a powerful player comparison metric, delivered in degrees.
Knee Extension Velo
The angular velocity of the front knee straightening after foot plant, which provides indicators of velocity potential. Measured in degrees per second.
Deception
The amount of time that the ball is visible to the hitter, after the instant of front foot strike. Measures in milliseconds.
Hip-Shoulder Separation
The difference in angle of between the hips and shoulders, occurring close to the foot plant. Measured in degrees.
PBR IA Preseason All-State (Invite Only)
Mar 6, 2022
ProPlayAI - Foot Plant
Elbow Flexion (avg)
Shoulder Abduction (avg)
Hip Shoulder Seperation (avg)
ProPlayAI - MER
External Rotation (avg)
Stride Length (avg)
Horizontal Abduction (avg)
ProPlayAI - Release
Arm Speed (max)
Arm Speed (avg)
Knee Extension Velocity (max)
Knee Extension Velocity (avg)
Knee Flexion (avg)
Arm Slot (avg)
Lateral Trunk Tilt (avg)
Arm Path (avg)
Deception (avg)
Torque (avg)
Efficiency (avg)
Sequencing (avg)
Notes
News
- UPDATE: 2024 Overall Rankings - Dec 2, 2022
- PBR IA Preseason All-State: Scouting Reports- Pitchers - Apr 14, 2022
- PBR IA Preseason All-State: Scouting Reports- Infielders - Apr 13, 2022
- PBR IA Preseason All-State: Scouting Reports- Outfielders - Apr 12, 2022
- PBR IA Underclass Prospect Games- Infielder Reports - Sep 22, 2021
- PBR IA Underclass Prospect Games- Outfielder Reports - Sep 21, 2021
- PBR IA Underclass Prospect Games- Trackman Hitting Leaderboard - Aug 5, 2021
- PBR IA Underclass Prospect Games- Blast Hitting Leaderboard - Aug 5, 2021
- PBR IA Underclass Prospect Games- Instant Analysis - Aug 2, 2021
- PBR IA Preseason All-State: Infielder Evaluations (23/24 Grads) - Apr 21, 2021
- PBR IA- Top Fastball Velocities Of 2020 - Nov 21, 2020
- PBR IA- Top Outfield Velocities Of 2020 - Nov 19, 2020
- PBR IA- Top Infield Velocities Of 2020 - Nov 18, 2020
- PBR IA- Top Exit Velocities Of 2020 - Nov 17, 2020
- PBR IA Scout Blog- Quad Cities Open Tournament - Sep 30, 2020
- PBR Freshmen Free: Instant Analysis - Aug 10, 2020
Comments
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Positional Profile: 1B/OF
Body: 5-10, 240-pounds.
Hit: LHH. Narrow stance to start, inline stride, slight barrel tip to load, above avg. present strength, loud pull side spray contact, shows ability to elevate baseball with hard contact.
Power: 99.1 max exit velocity, averaged 87.4 mph. 354’ max distance.
Arm: LH. INF - 81 mph. OF - 81 mph.
Defense: OF- sound fielder, loses momentum and direction on throws occasionally. IF- soft hands, active around the bag, show receiving ability at the base.
Run: 7.86 runner in the 60.
Delivery: Hybrid, medium balance point.
Arm Action: LH. Compact high ¾ slot.
FB: T79.4, 78.0-79.0 mph. T1711, 1538 average rpm. Varying action.
CB: 66.9-68.2 mph. T2099, 2030 average rpm. 1/7, lands well, avg. depth.
CH: 69.1-71.3 mph. T1715, 1634 average rpm. Feel for zone, avg. fade and sink.
Positional Profile: 1B/OF
Body: 5-10, 240-pounds.
Defense: INF - Active feet with softer glove, shows ability to make routine plays,74.00 mph. Avg. actions, online throws, accurate to target, OF - 77.00 mph.
Hit: LHH. Square stance, easy rhythm, has quality extension through contact, consistent hard contact with power potential.
Power: 89.00 mph exit velocity from the tee.
Run: 7.49 runner in the 60.
Positional Profile: OF/1B
Body: 5-10, 235-pounds.
Defense: OF - 79 mph. Fields out front and to side of feet, works through ball, short compact arm action, avg. accuracy to target. 1B - sure hands, solid range, decent receiver around bag.
Hit: Slight open stance, knee to knee trigger, hitchy hand load, powerful uphill path through zone, looks to elevate baseball, drives through contact well, shows above avg. power potential in bat.
Power: 89 mph exit velocity from the tee.
Run: 7.87 runner in the 60.
Strong, physical frame. Left-handed hitter that swings with intent and shows flashes of pop in his bat. Plays with high-energy and is a competitor. On the mound, delivered his fastball at 75-78 T80 mph with a 59-60 mph 1/7 curveball and 60 mph changeup. Uncommitted.
Positional Profile: OF
Body: 5-foot-10, 230-pounds.
Defense: Average actions in the outfield, more comfortable at 1B, good actions and works well out front
Arm: Left.INF - 72 mph. OF - 74 mph. Long high 3/4
Hit: Left. Tall, narrow, open stance, low hands slight uphill bat path, compact and short to contact
Power: 86 mph exit velocity from the tee. Gap to gap approach, some pop to pull side
Run: 7.5 runner in the 60.
Delivery: Small rocker step, high balance point, works directly to target
Arm Action: Left. High 3/4, finishes long out front
FB: T76, 74-76 mph.
CB: 58-62 mph.
CH: 59-63 mph.