Prep Baseball Report

CLASS OF 2024

RHP
C

Jonah
Roloff

Kettle Moraine (HS) • WI
5' 10" • 160LBS
L/R • 18yr 4mo
Travel Team: Prospects Training Academy

Rankings

2024 National

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2024 State

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Best of Snapshot
Positional Tools Velos / Pop
TrackMan Hitting
Blast
TrackMan Pitching
Pitching Velos
Swift
Visual Edge
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Best Of Stats

Pitching

Fastball

87
Velocity (max)
6/29/23
84 - 86
Velo Range
6/29/23
1578
Spin Rate (avg)
3/18/23

Changeup

73 - 77
Velo Range
6/23/23
1664
Spin Rate (avg)
3/19/22

Curveball

73 - 76
Velo Range
6/29/23
1725
Spin Rate (avg)
3/19/22

Slider

75 - 77
Velo Range
6/23/23
1785
Spin Rate (avg)
3/19/22
Power
90.4
Exit Velocity (max)
7/12/22
82.1
Exit Velocity (avg)
7/12/22
317
Distance (max)
7/12/22
50
Sweet Spot %
3/19/22
Hitting
23.2
Hand Speed (max)
7/12/22
69.7
Bat Speed (max)
7/12/22
13.4
Rot. Acc (max)
3/19/22
-
Hard Hit %
Run
7.25
60
7/12/22
4.05
30-yd
7/12/22
1.74
10-yd
7/12/22
19.2
Run speed (max)
7/12/22
Defense
76
INF Velo
3/19/22
85
OF Velo
7/12/22
77
C Velo
10/22/22
1.93 - 2.06
Pop Time
3/18/23

Positional Tools

2023
2022
60 Yard Dash
7.35
Pop Time
1.93 - 2.06
Catcher Velocity
77.0
Power / Speed Score
11.8
60 Yard Dash
7.25
Pop Time
1.94 - 2.01
Catcher Velocity
77.0
Infield Velocity
76.0
Outfield Velocity
85.0
Power / Speed Score
12.5
Milwaukee Preseason ID
Mar 18, 2023
Position
7.35
60-yard
1.93 - 2.06
Pop Time
77
C Velo
86
Exit Velo
Power Speed Score
Unsigned Senior Showcase
Oct 22, 2022
Position
1.94 - 2.01
Pop Time
77
C Velo
Top Prospect Games: Upperclass (Invite-Only)
Jul 12, 2022
Position
7.25
60-yard
1.94 - 2.00
Pop Time
85
OF Velo
76
C Velo
90
Exit Velo
Power Speed Score
Milwaukee Preseason ID
Mar 19, 2022
Position
7.28
60-yard
76
INF Velo
84
Exit Velo
Power Speed Score

Hitting

2023
2022
Exit Velocity Max
86.4
Exit Velocity Avg
81.1
Distance Max
312
Distance Avg
246
Launch Angle Avg
29.6
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
90.4
Exit Velocity Avg
80.8
Distance Max
317
Distance Avg
182
Launch Angle Avg
19.3
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Milwaukee Preseason ID
Mar 18, 2023
Trackman - Hitting
86.4
Exit Velocity (max)
81.1
Exit Velocity (avg)
246
Distance (avg)
312
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Top Prospect Games: Upperclass (Invite-Only)
Jul 12, 2022
Trackman - Hitting
90.4
Exit Velocity (max)
82.1
Exit Velocity (avg)
248
Distance (avg)
317
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Milwaukee Preseason ID
Mar 19, 2022
Trackman - Hitting
83.7
Exit Velocity (max)
79.5
Exit Velocity (avg)
116
Distance (avg)
254
Distance (max)
Sweet Spot %
Line Drive %
Ground Ball %

Hitting

2023
2022
Hand Speed Max
21.2
Hand Speed Avg
20.0
Bat Speed Max
67.4
Bat Speed Avg
65.0
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
23.2
Hand Speed Avg
21.3
Bat Speed Max
69.7
Bat Speed Avg
65.6
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Milwaukee Preseason ID
Mar 18, 2023
Blast - Hitting
21.2
Hand Speed (max)
20.1
Hand Speed (avg)
67.4
Bat Speed (max)
65.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Top Prospect Games: Upperclass (Invite-Only)
Jul 12, 2022
Blast - Hitting
23.2
Hand Speed (max)
22.3
Hand Speed (avg)
69.7
Bat Speed (max)
66.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Milwaukee Preseason ID
Mar 19, 2022
Blast - Hitting
22.1
Hand Speed (max)
20.3
Hand Speed (avg)
67.3
Bat Speed (max)
64.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2023
2022
Fastball
Velocity Max
84.3
Fastball
Velocity Avg
83.7
Fastball
Spin Rate Avg
1578
Fastball
Spin Score Avg
18.9
Fastball
Total Movement Avg
Curveball
Velocity Avg
73.5
Curveball
Spin Rate Avg
1636
Curveball
Total Movement Avg
Changeup
Velocity Avg
74.4
Changeup
Spin Rate Avg
1659
Changeup
Total Movement Avg
Slider
Velocity Avg
75.0
Slider
Spin Rate Avg
1593
Slider
Total Movement Avg
Fastball
Velocity Max
79.6
Fastball
Velocity Avg
75.1
Fastball
Spin Rate Avg
1473
Fastball
Spin Score Avg
18.6
Fastball
Total Movement Avg
Curveball
Velocity Avg
62.9
Curveball
Spin Rate Avg
1725
Curveball
Total Movement Avg
Changeup
Velocity Avg
74.4
Changeup
Spin Rate Avg
1664
Changeup
Total Movement Avg
Slider
Velocity Avg
68.6
Slider
Spin Rate Avg
1785
Slider
Total Movement Avg
Milwaukee Preseason ID
Mar 18, 2023
Trackman - Fastball
84.3
Velocity (max)
83.3 - 84.1
Velo Range
83.0
Eff Velocity (avg)
1,652
Spin Rate (max)
1,578
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
74.1
Velocity (max)
72.9 - 74.1
Velo Range
72.0
Eff Velocity (avg)
1,862
Spin Rate (max)
1,636
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
75.9
Velocity (max)
74.3 - 75.7
Velo Range
73.7
Eff Velocity (avg)
1,733
Spin Rate (max)
1,593
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
75.8
Velocity (max)
73.1 - 75.8
Velo Range
73.2
Eff Velocity (avg)
1,783
Spin Rate (max)
1,659
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Milwaukee Preseason ID
Mar 19, 2022
Trackman - Fastball
79.6
Velocity (max)
63.9 - 79.6
Velo Range
77.8
Eff Velocity (avg)
1,599
Spin Rate (max)
1,473
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - Curveball
67.8
Velocity (max)
54.6 - 67.8
Velo Range
65.1
Eff Velocity (avg)
1,748
Spin Rate (max)
1,725
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
74.5
Velocity (max)
62.1 - 74.5
Velo Range
71.2
Eff Velocity (avg)
1,910
Spin Rate (max)
1,785
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
75.3
Velocity (max)
73.8 - 75.1
Velo Range
72.9
Eff Velocity (avg)
1,772
Spin Rate (max)
1,664
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)

Pitch Scores

Pitching Velos

2023
2022
Fastball
Velocity Max
84.0
Fastball
Velocity Avg
83.5
Curveball
Velocity Avg
73.5
Changeup
Velocity Avg
74.5
Slider
Velocity Avg
75.0
Fastball
Velocity Max
80.0
Fastball
Velocity Avg
78.5
Curveball
Velocity Avg
67.5
Changeup
Velocity Avg
74.5
Slider
Velocity Avg
73.5
PBRT The Rock Open
Jun 29, 2023
Pitching
87
Max FB
84 - 86
FB
73 - 76
CB
PBRT Illinois Open
Jun 23, 2023
Pitching
85
Max FB
83 - 85
FB
73 - 77
CH
75 - 77
SL
Milwaukee Preseason ID
Mar 18, 2023
Pitching
84
Max FB
83 - 84
FB
73 - 74
CB
73 - 76
CH
74 - 76
SL
16U National Championship
Jun 23, 2022
Pitching
84
Max FB
80 - 83
FB
74 - 76
CB
Milwaukee Preseason ID
Mar 19, 2022
Pitching
80
Max FB
78 - 79
FB
67 - 68
CB
74 - 75
CH
71 - 76
SL

Game Performance

2024
2022
10 Yard Dash
1.74
30 Yard Dash
4.05
60 Yard Dash
7.25
Top Speed (MPH)
RSi
10 Yard Dash
1.74
30 Yard Dash
4.05
60 Yard Dash
7.25
Top Speed (MPH)
RSi
Milwaukee Preseason ID
Mar 18, 2023
Swift
1.92
10-yd
7.35
60-yd
18.8
Run speed (max)
1.46
RSi (max)
1.95
RSi (avg)
1,098
Jump Power (max)
Top Prospect Games: Upperclass (Invite-Only)
Jul 12, 2022
Swift
1.74
10-yd
4.05
30-yd
7.25
60-yd
19.2
Run speed (max)
8.3
Run Speed (avg)
1.27
RSi (max)
1.27
RSi (avg)
1,131
Jump Power (max)

Visual Edge

2022
Edge Score
86.63
Milwaukee Preseason ID
Mar 19, 2022
Visual Skills
86.63
Edge Score

Pitch Ai

Notes

Comments

5/12/23

Uncommitted. Roloff has been a key piece for the Lasers success all year as he is a versatile defender and an impact arm on the mound for the Lasers. This past week in two appearances Roloff tossed seven innings going 1-0 allowing two hits and striking out 11 batters on the week holding opponents to a .087 batting average against him.

3/18/23

Roloff started his impressive day off with a clean ‘pen. Standing at a projectable 5-foot-10, 160-pounds Roloff is an athletic, free mover downhill and he pairs it with a loose, whippy arm. During his ‘pen he ran his fastball up to 84.3 mph and this is a pitch that plays with life/carry through the zone, roughly 14’ of IVB on average. Roloff also showed a refined feel for three different offspeed pitches, the first being a low-70s curveball with downer action. He also spun in a mid-70s slider with tight 11/5 break. Behind the plate, Roloff is an advanced receiver and is quick out of the crouch that recorded pop-times in the 1.93-2.06 range. Offensively, Roloff features a smooth left-handed swing that is short and quick to the ball, and he registered exit velocities up to 86.4 mph. 

3/18/23

Positional Profile: C/RHP
Body: 5-10, 160-pounds. Good proportions, high waist, lean, athletic, more fill coming.
Hit: LHH. Narrower set, slightly open.  Fast hands, short to the ball, loft to the path, hitterish, drives the ball to pull side.
Power: 86 max exit velocity, averaged 81.1 mph. 312’ max distance.
Arm: RH. C - 77 mph. INF -  mph. OF -  mph. Loose, fluid arm action, 3/4 slot, accurate to the bag.
Defense: 1.93-2.06 pop times. Athletic mover out of the crouch, soft hands, quick transfer, fundamental blocker.
Run: 7.35 runner in the 60. 

Delivery: High inline leg lift into. Aggressive down the mound.
Arm Action: RH. Clean, loose arm. 3/4 slot. Whippy.
FB: T84, 83-84 mph. Thrown downhill with life through the zone.  T1652, 1578 average rpm.
CB: 73-74 mph. Downer action. Feel for the zone.  T1862, 1636 average rpm.
SL: 74-76 mph. Tight 11/5 action.  T1733, 1593 average rpm.
CH: 73-76 mph. Maintains arm speed. Heavy fading action with occasional depth.  T1783, 1659 average rpm.

12/01/22

Roloff is a savvy left-handed-hitting catching prospect in Wisconsin’s junior class and across the summer and fall, he consistently showed well in front of our staff. Listed at an athletic 5-foot-10, 155-pounds, Roloff’s advanced defensive capabilities point to him sticking behind the plate in the long run as he has created lows of 1.93 pop times in front of our staff before. Roloff is actually somewhat new to the position, which is even more impressive, and he’s also looked like a natural at second base and in the outfield in front of us. Offensively, his hit tool is also something that sets him apart from his peers, as he consistently drives the ball hard to the entire field. Overall, Roloff has really made a name for himself inside this class after a productive 2022 campaign and he is a name to keep a close eye on as continue his high school career.

7/12/22

Roloff has blossomed into a real prospect in the state, as an athletic and versatile player with two-way potential. While he just caught and played the outfield at this event, you’d never know that Roloff is somewhat new to both positions. Behind the plate, he’s quick-twitch both inside of his transfer as well as out of the crouch defending his position on the bunt attempt. That quickness resulted in a pop range of 1.94-2.00 with 76 mph arm strength, and as you might expect, his athleticism and arm strength worked in the outfield too. There, he topped 85 mph to home and roamed the outfield grass smoothly, with above-average foot speed, measured at 19.2 mph during his 60-yard dash (7.25). Roloff’s left-handed bat is equally athletic, and he’s gained significant strength since he appeared at a March event. Here, Roloff reached a max exit speed over 90 mph – and given his presently slight 5-foot-10, 155-pound build – signals a bright future at the plate as well.

7/12/22

Positional Profile: C/RHP
Body: 5-10, 155-pounds. Thin, wiry, twitch
Hits: LHH. Narrow base, toe tap back, short trigger, hits slightly back of center
Power: 90 max exit velocity, averaged 82.1 MPH. 317' max distance.
Arm: RH. C-76 mph. OF-85 mph. Quick short draw. OF-Quick arm path. Loose. 3/4 slot. Carry to home.
Defense: 1.94-2.00 pop times. very quick transfer and quick right foot, quick out of the squat on a bunt
Run: 7.25 runner in the 60.

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