Prep Baseball Report

CLASS OF 2026

OF
RHP

Jack
Stefani

Glenbrook South (HS) • IL
6' 2" • 185LBS
S/R • 16yr 4mo
Travel Team: Top Tier North 2026's

Rankings

2026 National

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2026 State

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

Best Of Stats

Hitting
21
Hand Speed (max)
6/06/23
74.8
Bat Speed (max)
8/06/24
17.4
Rot. Acc (max)
7/16/24
25
Hard Hit %
7/16/24
Power
96.3
Exit Velocity (max)
8/06/24
85.3
Exit Velocity (avg)
7/16/24
344
Distance (max)
8/06/24
56
Sweet Spot %
7/16/24
Run
7.31
60
7/16/24
4.06
30-yd
8/06/24
1.7
10-yd
8/06/24
19.1
Run speed (max)
7/16/24
Defense
-
INF Velo
88
OF Velo
8/06/24
-
C Velo
-
Pop Time
Pitching

Fastball

87.1
Velocity (max)
7/16/24
84 - 87
Velo Range
7/16/24
2395
Spin Rate (avg)
7/16/24

Changeup

66.4 - 70.2
Velo Range
7/16/24
1866
Spin Rate (avg)
7/16/24

Curveball

65 - 67.4
Velo Range
7/16/24
1985
Spin Rate (avg)
7/16/24

Slider

67 - 68
Velo Range
8/06/24
1742
Spin Rate (avg)
8/06/24

Positional Tools

2024
2023
60 Yard Dash
7.31
Outfield Velocity
88.0
Power / Speed Score
13.2
60 Yard Dash
7.71
Outfield Velocity
82.0
Power / Speed Score
11.4
Illinois State Games (Invite-Only)
Aug 6, 2024
Position
7.41
60-yard
88
OF Velo
96
Exit Velo
Power Speed Score
Central Illinois Summer ID
Jul 16, 2024
Position
7.31
60-yard
88
OF Velo
92
Exit Velo
Power Speed Score
Top Tier Scout Day
Jun 6, 2023
Position
7.71
60-yard
82
OF Velo
88
Exit Velo
Power Speed Score

Hitting

2024
2023
Exit Velocity Max
96.3
Exit Velocity Avg
84.4
Distance Max
344
Distance Avg
210
Launch Angle Avg
23.4
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
87.9
Exit Velocity Avg
79.7
Distance Max
330
Distance Avg
198
Launch Angle Avg
23.2
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Illinois State Games (Invite-Only)
Aug 6, 2024
Trackman - Hitting
96.3
Exit Velocity (max)
83.6
Exit Velocity (avg)
212
Distance (avg)
344
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Central Illinois Summer ID
Jul 16, 2024
Trackman - Hitting
92.0
Exit Velocity (max)
85.3
Exit Velocity (avg)
207
Distance (avg)
314
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Top Tier Scout Day
Jun 6, 2023
Trackman - Hitting
87.9
Exit Velocity (max)
79.7
Exit Velocity (avg)
198
Distance (avg)
330
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2024
2023
Hand Speed Max
20.9
Hand Speed Avg
19.1
Bat Speed Max
74.8
Bat Speed Avg
67.8
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
21.0
Hand Speed Avg
18.0
Bat Speed Max
71.4
Bat Speed Avg
66.0
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Illinois State Games (Invite-Only)
Aug 6, 2024
Blast - Hitting
20.9
Hand Speed (max)
19.2
Hand Speed (avg)
74.8
Bat Speed (max)
67.5
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Central Illinois Summer ID
Jul 16, 2024
Blast - Hitting
20.9
Hand Speed (max)
19.1
Hand Speed (avg)
72.3
Bat Speed (max)
68.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Top Tier Scout Day
Jun 6, 2023
Blast - Hitting
21.0
Hand Speed (max)
18.0
Hand Speed (avg)
71.4
Bat Speed (max)
66.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2024
Fastball
Velocity Max
87.1
Fastball
Velocity Avg
83.6
Fastball
Spin Rate Avg
2277
Fastball
Spin Score Avg
27.2
Fastball
Total Movement Avg
Curveball
Velocity Avg
65.6
Curveball
Spin Rate Avg
1934
Curveball
Total Movement Avg
Changeup
Velocity Avg
68.2
Changeup
Spin Rate Avg
1830
Changeup
Total Movement Avg
Slider
Velocity Avg
66.4
Slider
Spin Rate Avg
1718
Slider
Total Movement Avg
Illinois State Games (Invite-Only)
Aug 6, 2024
Trackman - Fastball
84.9
Velocity (max)
81.7 - 84.2
Velo Range
81.4
Eff Velocity (avg)
2,361
Spin Rate (max)
2,240
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
66.3
Velocity (max)
63.7 - 66.1
Velo Range
62.7
Eff Velocity (avg)
1,969
Spin Rate (max)
1,883
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
67.8
Velocity (max)
67.2 - 67.8
Velo Range
65.6
Eff Velocity (avg)
1,965
Spin Rate (max)
1,742
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
67.6
Velocity (max)
66.0
Eff Velocity (avg)
1,652
Spin Rate (max)
1,652
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Central Illinois Summer ID
Jul 16, 2024
Trackman - Fastball
87.1
Velocity (max)
84.2 - 86.7
Velo Range
82.6
Eff Velocity (avg)
2,456
Spin Rate (max)
2,395
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
67.5
Velocity (max)
65.0 - 67.4
Velo Range
2,145
Spin Rate (max)
1,985
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Slider
68.3
Velocity (max)
63.3 - 67.8
Velo Range
61.7
Eff Velocity (avg)
1,893
Spin Rate (max)
1,699
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
70.8
Velocity (max)
66.4 - 70.2
Velo Range
66.0
Eff Velocity (avg)
2,093
Spin Rate (max)
1,866
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)

Pitch Scores

2024
Fastball
Hop+
Fastball
Sink+
Fastball
Rise+
Curveball
Hammer+
Curveball
Sweep+
Slider
Hammer+
Slider
Sweep+
Illinois State Games (Invite-Only)
Aug 6, 2024
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Central Illinois Summer ID
Jul 16, 2024
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+
Pitch Scores - Slider
Hammer+
Sweep+

Pitching Velos

2024
Fastball
Velocity Max
87.0
Fastball
Velocity Avg
84.2
Curveball
Velocity Avg
65.5
Changeup
Velocity Avg
68.0
Slider
Velocity Avg
66.5
Illinois State Games (Invite-Only)
Aug 6, 2024
Pitching
85
Max FB
82 - 84
FB
64 - 66
CB
68 - 68
CH
67 - 68
SL
Central Illinois Summer ID
Jul 16, 2024
Pitching
87
Max FB
84 - 87
FB
65 - 67
CB
66 - 70
CH
63 - 68
SL

Game Performance

2024
2023
10 Yard Dash
1.70
30 Yard Dash
4.06
60 Yard Dash
7.31
Top Speed (MPH)
RSi
Vertical Jump
10 Yard Dash
1.92
30 Yard Dash
4.33
60 Yard Dash
7.71
Top Speed (MPH)
Illinois State Games (Invite-Only)
Aug 6, 2024
Swift
1.70
10-yd
4.06
30-yd
7.41
60-yd
18.3
Run speed (max)
27.6
Jump Height (max)
Central Illinois Summer ID
Jul 16, 2024
Swift
1.76
10-yd
4.09
30-yd
7.31
60-yd
19.1
Run speed (max)
1.65
RSi (max)
27.8
Jump Height (max)
Top Tier Scout Day
Jun 6, 2023
Swift
1.92
10-yd
4.33
30-yd
7.71
60-yd
18.1
Run speed (max)

Visual Edge

2024
Edge Score
70.03

Pitch Ai

Notes

Comments

7/19/24

OF/RHP Jack Stefani (Glenbrook South, 2026) is an intriguing prospect in the state’s 2026 class. He’s a left-handed hitter at the plate with twitchy actions, producing a max exit velocity of 92 mph, but staying on the barrel for an average of 85.3 mph. From the outfield he showed clean, athletic actions with a long and loose arm, producing an 88 mph bullet on his best ball to home. On the mound, he showed athletic actions, producing a mid-80s fastball that was up to 87.1 mph with quality spin (avg. 2395) and an average of 20.1 inches of horizontal movement. An upside prospect at 6-foot-2, 185-pounds.

7/16/24

Positional Profile: OF/RHP
Body: 6-2, 185-pounds. Athletic frame with projection.
Hit: SH. Athletic, tall setup, calm approach, high leg lift into medium stride. RH: Loose, level path, line drive approach, creates some loft on the ball. LH: Level path, strong hands, swings with intent, line drive approach, creates some natural loft on the ball. 68.3 mph bat speed with 15 G’s of rotational acceleration.
Power: 92 max exit velocity, averaged 85.3 mph. 314’ max distance.
Arm: RH. OF - 88 mph. Long, loose, quick arm action, high 3/4 slot; throws carry.
Defense: Confident one hand gather out front, intentful crow hop to target.
Run: 7.31 runner in the 60.

7/16/24

Positional Profile: OF/RHP
Body: 6-2, 185-pounds. Athletic frame with projection.
Delivery: Simple, high leg lift with tuck, drop/drive down the mound.
Arm Action: RH. Long, quick arm, 3/4 slot.
FB: T87, 84-87 mph. Firm out of the hand with slight run. T2456, 2395 average rpm.
CB: 65-67 mph. 12/6 shape, plays low. T2145, 1985 average rpm.
SL: 63-68 mph. 10/4 shape. T1893, 1699 average rpm.
CH: 66-70 mph. Heavy fade, developing feel. T2093, 1866 average rpm.

6/06/23

OF Jack Stefani (Glenbrook South, 2026) is a 6-foot, 170-pound, athletically-built, switch-hitter to follow in the class. Stefani showed true switch-hit ability with a fluid stroke from both sides, particularly the left, where he flashed loose, quick hands, stayed on-plane with natural lift and drove balls to both gaps. Posted a max exit velocity of 88 mph during BP and his furthest batted ball traveled 330’. Defensively, he flashed steady hands and a quick arm that topped at 82 mph from the outfield.  

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Physical

2024
Grip Strgth (LH)
Grip Strgth (RH)
Illinois State Games (Invite-Only)
Aug 6, 2024
Physical - Athlete
6' 1"
Ht
184.3
Wt
Body Fat %
SMM
Grip Strgth (RH)
Grip Strgth (LH)
Central Illinois Summer ID
Jul 16, 2024
Physical - Athlete
6' 0"
Ht
184.8
Wt
Body Fat %
SMM
Grip Strgth (RH)
Grip Strgth (LH)