Prep Baseball Report

CLASS OF 2024

C
3B

Sean
Kempf

Crystal Lake Central (HS) • IL
5' 10" • 197.8LBS
R/R • 18yr
Travel Team: GRB Rays Illinois ProPlayer

Rankings

2024 National

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2024 State

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Best of Snapshot
Physical
Positional Tools Velos / Pop
TrackMan Hitting
Blast
Pitching Velos
Swift
Visual Edge
News
Comments
Twitter
Contact

Best Of Stats

Hitting
23
Hand Speed (max)
3/27/21
77.5
Bat Speed (max)
2/11/23
28.4
Rot. Acc (max)
2/25/23
-
Hard Hit %
Power
100.2
Exit Velocity (max)
8/09/22
91.8
Exit Velocity (avg)
8/09/22
363
Distance (max)
8/08/23
60
Sweet Spot %
2/12/22
Run
7.46
60
8/09/22
4.21
30-yd
2/11/23
1.82
10-yd
2/11/23
18
Run speed (max)
2/25/23
Defense
76
INF Velo
2/12/22
-
OF Velo
78
C Velo
2/25/23
2.00 - 2.09
Pop Time
2/25/23
Pitching

Fastball

68
Velocity (max)
1/26/20
64 - 68
Velo Range
1/26/20
-
Spin Rate (avg)

Changeup

59 - 63
Velo Range
1/26/20
-
Spin Rate (avg)

Curveball

55 - 57
Velo Range
1/26/20
-
Spin Rate (avg)

Positional Tools

2023
2022
2021
2020
60 Yard Dash
7.77
Home to First
4.21
Pop Time
2.00 - 2.20
Catcher Velocity
78.0
Power / Speed Score
12.4
60 Yard Dash
7.46
Home to First
4.38
Pop Time
2.09 - 2.36
Catcher Velocity
74.0
Infield Velocity
76.0
Power / Speed Score
13.4
60 Yard Dash
7.66
Home to First
4.72
Pop Time
2.25 - 2.38
Catcher Velocity
73.0
Infield Velocity
73.0
Power / Speed Score
11.5
Home to First
5.05
Pop Time
2.47 - 2.60
Catcher Velocity
64.0
Infield Velocity
65.0
Illinois State Games (Invite-Only)
Aug 8, 2023
Position
7.97
60-yard
2.03 - 2.19
Pop Time
75
C Velo
94
Exit Velo
Power Speed Score
Preseason All-State: Upperclass (Invite-Only)
Feb 25, 2023
Position
7.77
60-yard
2.00 - 2.09
Pop Time
78
C Velo
96
Exit Velo
Power Speed Score
McHenry Preseason ID
Feb 11, 2023
Position
2.06 - 2.20
Pop Time
75
C Velo
4.21
H-1st
93
Exit Velo
Illinois State Games (Invite-Only)
Aug 9, 2022
Position
7.46
60-yard
2.09 - 2.19
Pop Time
74
C Velo
100
Exit Velo
Power Speed Score
McHenry Preseason ID
Feb 12, 2022
Position
2.19 - 2.36
Pop Time
76
INF Velo
73
C Velo
4.38
H-1st
95
Exit Velo
Underclass Invitational (Invite Only)
Mar 27, 2021
Position
7.66
60-yard
2.25 - 2.36
Pop Time
73
C Velo
88
Exit Velo
Power Speed Score
McHenry Preseason I.D.
Jan 31, 2021
Position
2.28 - 2.38
Pop Time
73
INF Velo
71
C Velo
4.72
H-1st
83
Exit Velo
Future Prospects Showcase & Educational Camp
Jan 26, 2020
Position
2.47 - 2.60
Pop Time
65
INF Velo
64
C Velo
5.05
H-1st
73
Exit Velo

Hitting

2023
2022
2021
Exit Velocity Max
96.0
Exit Velocity Avg
87.0
Distance Max
363
Distance Avg
184
Launch Angle Avg
16.5
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
100.2
Exit Velocity Avg
91.2
Distance Max
340
Distance Avg
162
Launch Angle Avg
9.4
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
87.9
Exit Velocity Avg
77.8
Distance Max
298
Distance Avg
125
Launch Angle Avg
14.1
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Illinois State Games (Invite-Only)
Aug 8, 2023
Trackman - Hitting
94.5
Exit Velocity (max)
85.7
Exit Velocity (avg)
158
Distance (avg)
363
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Preseason All-State: Upperclass (Invite-Only)
Feb 25, 2023
Trackman - Hitting
96.0
Exit Velocity (max)
85.4
Exit Velocity (avg)
203
Distance (avg)
330
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
McHenry Preseason ID
Feb 11, 2023
Trackman - Hitting
93.0
Exit Velocity (max)
89.9
Exit Velocity (avg)
191
Distance (avg)
338
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Illinois State Games (Invite-Only)
Aug 9, 2022
Trackman - Hitting
100.2
Exit Velocity (max)
91.8
Exit Velocity (avg)
149
Distance (avg)
340
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Ground Ball %
McHenry Preseason ID
Feb 12, 2022
Trackman - Hitting
94.8
Exit Velocity (max)
90.4
Exit Velocity (avg)
177
Distance (avg)
276
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Underclass Invitational (Invite Only)
Mar 27, 2021
Trackman - Hitting
87.9
Exit Velocity (max)
75.0
Exit Velocity (avg)
129
Distance (avg)
229
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
McHenry Preseason I.D.
Jan 31, 2021
Trackman - Hitting
85.7
Exit Velocity (max)
80.8
Exit Velocity (avg)
121
Distance (avg)
298
Distance (max)
Sweet Spot %
Line Drive %
Ground Ball %

Hitting

2023
2022
2021
Hand Speed Max
22.8
Hand Speed Avg
21.4
Bat Speed Max
77.5
Bat Speed Avg
73.6
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
22.2
Hand Speed Avg
21.1
Bat Speed Max
76.5
Bat Speed Avg
72.5
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
23.0
Hand Speed Avg
21.8
Bat Speed Max
71.9
Bat Speed Avg
65.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Preseason All-State: Upperclass (Invite-Only)
Feb 25, 2023
Blast - Hitting
22.0
Hand Speed (max)
20.7
Hand Speed (avg)
77.0
Bat Speed (max)
72.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
McHenry Preseason ID
Feb 11, 2023
Blast - Hitting
22.8
Hand Speed (max)
22.3
Hand Speed (avg)
77.5
Bat Speed (max)
74.5
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Illinois State Games (Invite-Only)
Aug 9, 2022
Blast - Hitting
21.7
Hand Speed (max)
20.8
Hand Speed (avg)
76.5
Bat Speed (max)
75.2
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
McHenry Preseason ID
Feb 12, 2022
Blast - Hitting
22.2
Hand Speed (max)
21.4
Hand Speed (avg)
71.4
Bat Speed (max)
68.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Underclass Invitational (Invite Only)
Mar 27, 2021
Blast - Hitting
23.0
Hand Speed (max)
21.6
Hand Speed (avg)
71.9
Bat Speed (max)
66.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
McHenry Preseason I.D.
Jan 31, 2021
Blast - Hitting
22.8
Hand Speed (max)
22.0
Hand Speed (avg)
67.0
Bat Speed (max)
64.1
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

Pitch Scores

Pitching Velos

2020
Fastball
Velocity Max
68.0
Fastball
Velocity Avg
66.0
Curveball
Velocity Avg
56.0
Changeup
Velocity Avg
61.0
Future Prospects Showcase & Educational Camp
Jan 26, 2020
Pitching
68
Max FB
64 - 68
FB
55 - 57
CB
59 - 63
CH

Game Performance

2024
2023
2022
10 Yard Dash
1.82
30 Yard Dash
4.21
60 Yard Dash
7.77
Top Speed (MPH)
RSi
Vertical Jump
10 Yard Dash
1.82
30 Yard Dash
4.21
60 Yard Dash
7.77
Top Speed (MPH)
RSi
Vertical Jump
10 Yard Dash
1.80
30 Yard Dash
4.13
60 Yard Dash
7.46
Top Speed (MPH)
RSi
Vertical Jump
Illinois State Games (Invite-Only)
Aug 8, 2023
Swift
1.95
10-yd
4.37
30-yd
7.97
60-yd
17.1
Run speed (max)
Preseason All-State: Upperclass (Invite-Only)
Feb 25, 2023
Swift
2.03
10-yd
4.37
30-yd
7.77
60-yd
18.1
Run speed (max)
1.68
RSi (max)
1.67
RSi (avg)
1,630
Jump Power (max)
28.3
Jump Height (max)
28.1
Jump Height (avg)
McHenry Preseason ID
Feb 11, 2023
Swift
1.82
10-yd
4.21
30-yd
17.1
Run speed (max)
1.42
RSi (max)
1.42
RSi (avg)
1,551
Jump Power (max)
26.8
Jump Height (max)
26.2
Jump Height (avg)
Illinois State Games (Invite-Only)
Aug 9, 2022
Swift
1.80
10-yd
4.13
30-yd
7.46
60-yd
18.5
Run speed (max)
8.0
Run Speed (avg)
2.07
RSi (max)
2.07
RSi (avg)
1,617
Jump Power (max)
28.0
Jump Height (max)
27.4
Jump Height (avg)

Visual Edge

2023
2022
Edge Score
74.24
Edge Score
74.88

Pitch Ai

Notes

Comments

3/02/23

Sean Kempf (Crystal Lake Central) is another catcher with an impactful right-handed swing. Kempf has a compact 5-foot-10, 185-pound frame and his swing is much the same. He stays short and direct to the ball, flat through the zone with above-average bat-to-ball skills and creates backspin contact to the gaps with a 96 mph peak exit velocity, 85.4 mph average. Kempf showed improvements from behind the plate since our last look, lowering his pop-time down to 2.00 seconds and adding three mph to his velocity out of the chute (now T78 mph).

2/25/23

Positional Profile: C
Body: 5-10, 185-pounds. Muscle-bound, strong frame.
Hit: RHH. Balanced setup, quiet pre-pitch. Compact, strong swing, present bat speed, covers the plate, hard contact and finishes on balance.
Power: 96 max exit velocity, averaged 85.4 mph. 330’ max distance.
Arm: RH. C - 78 mph. Short, over-the-top arm action and throws play true.
Defense: 2.00-2.09 pop times. Square setup, sure-hands, strong wrists. Clean and repeatable out of the crouch.
Run: 7.77 runner in the 60. 

2/25/23
C Sean Kempf (Crystal Lake Central) is another catcher with an impactful right-handed swing. Kempf has a compact 5-foot-10, 185-pound frame and his swing is much the same. He stays short and direct to the ball, flat through the zone with above-average bat-to-ball skills and creates backspin contact to the gaps with a 96 mph peak exit velocity, 85.4 mph average. Kempf showed improvements from behind the plate since our last look, lowering his pop-time down to 2.00 seconds and adding three mph to his velocity out of the chute (now T78 mph).
2/15/23

Sean Kempf (Crystal Lake Central) made us take notice of his offensive abilities at the Illinois State Games this past August and continued to show well with the bat at the McHenry Preseason ID. Kempf has a compact, loose, strong swing that was on the barrel throughout his round of BP. Kempf averaged 89.9 mph off the bat and wore out both gaps throughout his round. Defensively, Kempf topped at 75 mph with a low pop-time of 2.06 seconds. His throws played with backspin and were mostly on the bag, coming from an over-the-top slot. His transfer is quick and clean, working directionally out of the crouch in-line with second. 

2/11/23

Positional Profile: C
Body: 5-10, 185-pounds. Athletic, well proportioned frame with strength throughout.
Hit: RHH. Balanced wide setup, short stride. Strong hands, repeatable swing, compact and direct to the ball, stays through the zone, on the barrel with authority and present bat speed.
Power: 93 max exit velocity, averaged 89.9 mph.
Arm: RH. C - 75 mph. Compact arm action into a high 3/4 slot with present arm speed, on the bag often.
Defense: 2.06-2.20 pop times. Reliable soft hands, quick transfer, replaces feet and gains ground, soft blocker.
Run: 4.21 runner in the 30-yard split.

8/10/22

Another impressive offensive showing for Team 2 came from C/2B Sean Kempf (Crystal Lake Central, 2024). Kempf has a strong, compact frame and his swing is much the same. Kempf stays short and repeatable with advanced bat strength and he was all over the barrel in BP. Kempf drove hard contact to all fields, registering a 100.2 mph max EV. Kempf also finished game play going 2-for-7 with two stolen bases, two walks, an RBI and a run scored.

8/09/22

Positional Profile: C/3B
Body: 5-9, 175-pounds. Strong, muscular build.
Hits: RHH. Tall setup, long stride. Flat path, creates backspin, strong hands. Swings with controlle intent, hard contact to all fields with jump off the barrel. In-game stats: 2-for-7, 2 SB, 2 RBI, 2 BB, R.
Power: 100 max exit velocity, averaged 91.8 MPH. 340' max distance.
Arm: RH. C-74 mph. Short arm action, over-the-top slot.
Defense: 2.09-2.19 pop times. Squared setup, sure-hands, clean release, deadens blocks in front.
Run: 7.46 runner in the 60.

2/12/22

Positional Profile: C/3B
Body: 5-10, 175-pounds. Well-proportioned frame.
Hit: RHH. Wide, slightly open base. Gets back to square with a short stride. Loose, easy actions. Present bat speed. Level path through the zone with balance throughout.
Power: 94.8 max exit velocity, averaged 90.4 mph. 275’ max distance.
Arm: RH. C - 73 mph. INF - 76 mph. Above-average arm strength. C: Short arm action, over-the-top arm slot. IF: Short arm action. Natural high 3/4 with the ability to throw from multiple arm slots.
Defense: 2.19 - 2.36 pop times. C: Stiff in the crouch, clean exchange. IF: Plays through the baseball. Body control on the move.
Run: 4.38 runner home-to-first. 

3/27/21

Positional Profile: C/SS
Body: 5-9, 150-pounds.
Hit: RHH. Balanced setup, short stride. Short swing, level bat path, works inside the baseball, line drives at times.
Power: 87.85 max exit velocity, averaged 75.04 mph. 228’ max distance.
Arm: RH. C - 73 mph. Short arm action, over-the-top arm slot.
Defense: 2.25-2.36 pop times. Easy receiving actions, clean exchanges, proper direction.
Run: 7.66 runner in the 60.

1/31/21

Positional Profile: C/INF
Body: 5-foot-9, 150-pounds. Athletic frame with some wiry strength attached.
Hit: RHH. Balanced slightly open setup, smooth load as hands slot into a strong hitting position, toe-tap timing trigger.  Short and simple bat path, flashed line drive feel to the pull-side, easy effort throughout.
Power: 85.72 max exit velocity, averaged 80.82 mph. 298’ max distance.
Arm: RH. C - 71 mph. INF - 73 mph. Arm plays short and comes out of an over-the-top window.
Defense2.28-2.38 pop times.  Worked out behind the plate and on the infield. Athletic setup from the crouch, flexible lower half, works direct to target, long to release. Active feet on the infield, glove hand works out front of body at times, controls body well on the move.
Run: 4.72 runner in the 60.  

1/26/20

Positional Profile: C 
Body: 5-foot-5, 130-pounds.
Defense: 2.47-2.60 pop times. Behind the plate; sure-handed and clean transfers. On the infield; fluid footwork and sure-handed.
Arm: RH. C - 64 mph. INF - 65 mph. Short arm action, high 3/4 arm slot, throws played accurate with carry.
Hit: RHH. Balanced setup, smooth load, short stride. Loose hands, long bat path, fluid rhythm with a gap-to-gap approach.
Power: 73 mph exit velocity from the tee. 
Run: 5.05 runner, home-to-first. 

Delivery: Tall and fall delivery, smooth rhythm, level shoulders, works in-line and lands square.
Arm Action: RH. Loose arm action, high 3/4 arm slot.
FB: T68, 64-68 mph. Plays straight.
CB: 55-57 mph. 11/5 shape, gradual movement.
CH: 59-63 mph. Arm side fade action.

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Physical

2024
2023
Grip Strgth (LH)
Grip Strgth (RH)
Grip Strgth (LH)
Grip Strgth (RH)
Illinois State Games (Invite-Only)
Aug 8, 2023
Physical - Athlete
5' 8"
Ht
197.8
Wt
Body Fat %
SMM
Grip Strgth (RH)
Grip Strgth (LH)