@jtdempsey2025 
85
Velocity (max)
6/20/24
CLASS OF 2025
RHP
3B
Jackson
Dempsey
Lincoln Memorial
Marysville (HS) • OH
6' 2" • 185LBS
R/R • 19yr
Travel Team: Ohio Elite - Ratcliff
Marysville (HS) • OH
6' 2" • 185LBS
R/R • 19yr
Travel Team: Ohio Elite - Ratcliff
Rankings
2025 National
Rankings available to Premium Subscriber
2025 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
83 - 85
Velo Range
6/20/24
1759
Spin Rate (avg)
7/05/23
Changeup
76 - 78
Velo Range
7/03/25
1529
Spin Rate (avg)
7/05/23
Curveball
73 - 75
Velo Range
7/03/25
1647
Spin Rate (avg)
7/05/23
Slider
72.5 - 73.7
Velo Range
7/05/23
1752
Spin Rate (avg)
7/05/23
81.3
Exit Velocity (max)
6/23/21
75.1
Exit Velocity (avg)
6/23/21
269
Distance (max)
6/23/21
75
Sweet Spot %
6/23/21
21.4
Hand Speed (max)
6/23/21
68.1
Bat Speed (max)
6/23/21
14.1
Rot. Acc (max)
6/23/21
-
Hard Hit %
8.25
60-yd
6/23/21
-
30-yd
-
10-yd
-
Run speed (max)
71
INF Velo
6/23/21
-
OF Velo
-
C Velo
-
Pop Time
Positional Tools
2021
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.25
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
71.0
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.
9.9
Hitting
2021
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
81.3
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
75.1
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
269
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
207
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
22.7922
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.
2021 Central Ohio Rising Prospects (Class of 2025 & 2026)
Jun 23, 2021
Trackman - Hitting
81.3
Exit Velocity (max)
75.1
Exit Velocity (avg)
207
Distance (avg)
269
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2021
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
21.4
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.6
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
68.1
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
65.0
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.
2021 Central Ohio Rising Prospects (Class of 2025 & 2026)
Jun 23, 2021
Blast - Hitting
21.4
Hand Speed (max)
20.6
Hand Speed (avg)
68.1
Bat Speed (max)
65.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2023
2022
2021
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
81.9
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).
1759
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.
21.5
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).
69.1
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).
1647
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).
72.1
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).
1529
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).
73.1
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).
1752
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
80.6
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
77.5
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).
1532
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.
19.8
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).
67.8
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).
1510
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).
73.8
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).
1307
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).
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
74.5
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
72.5
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).
1480
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.
20.4
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).
61.3
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).
1384
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).
61.3
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).
1222
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).
2023 Central Ohio Prospect Showcase
Jul 5, 2023
Trackman - Fastball
82.3
Velocity (max)
81.7 - 82.3
Velo Range
81.3
Eff Velocity (avg)
1,838
Spin Rate (max)
1,759
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
69.8
Velocity (max)
68.5 - 69.8
Velo Range
67.9
Eff Velocity (avg)
1,780
Spin Rate (max)
1,647
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
73.8
Velocity (max)
72.5 - 73.7
Velo Range
71.2
Eff Velocity (avg)
1,840
Spin Rate (max)
1,752
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
75.1
Velocity (max)
69.9 - 74.8
Velo Range
70.9
Eff Velocity (avg)
1,941
Spin Rate (max)
1,529
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
2022 Central Ohio TPG Trials (Invite Only)
Jun 7, 2022
Trackman - Fastball
80.6
Velocity (max)
75.7 - 79.2
Velo Range
75.5
Eff Velocity (avg)
1,861
Spin Rate (max)
1,532
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
69.7
Velocity (max)
66.8 - 68.8
Velo Range
65.6
Eff Velocity (avg)
1,716
Spin Rate (max)
1,510
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
73.9
Velocity (max)
73.7 - 73.9
Velo Range
72.4
Eff Velocity (avg)
1,344
Spin Rate (max)
1,307
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
2021 Central Ohio Rising Prospects (Class of 2025 & 2026)
Jun 23, 2021
Trackman - Fastball
74.5
Velocity (max)
70.9 - 74.1
Velo Range
71.0
Eff Velocity (avg)
1,614
Spin Rate (max)
1,480
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
62.0
Velocity (max)
60.4 - 62.0
Velo Range
59.4
Eff Velocity (avg)
1,472
Spin Rate (max)
1,384
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
62.0
Velocity (max)
60.7 - 62.0
Velo Range
59.6
Eff Velocity (avg)
1,312
Spin Rate (max)
1,222
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Pitch Scores
2023
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.
Slider
Hammer+
A hammer breaking ball drops vertically with velocity through the zone, or 12-to-6 movement. Hammer+ of 100 is MLB average.
Slider
Sweep+
A sweeping breaking ball moves horizontally with velocity through the zone. Sweep+ of 100 is MLB average.
Pitching Velos
2025
2024
2022
2021
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
81.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
85.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
84.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
73.0
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)
76.8
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.5
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)
70.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
60.8
Game Performance
Vizual Edge
Pitch Ai
Notes
News
- 2023 Central Ohio Prospect Showcase Advanced Metrics: Hitting Leaderboard - Jul 10, 2023
- 2023 Central Ohio Prospect Showcase Advanced Metrics: Trackman Analytics - Pitching Leaderboard - Jul 10, 2023
- 2023 Central Ohio Prospect Showcase - Quick Hits - Jul 7, 2023
- Results From 2023 Central Ohio Prospect Showcase - Jul 6, 2023
- 2022 Central Ohio TPG Trials - Quick Hits - Jun 9, 2022
- Results From 2022 Central Ohio TPG Trials - Jun 8, 2022
- Results From 2021 Central Ohio Rising Prospects - Jun 24, 2021
- 2021 Central Ohio Rising Prospects - Quick Hits - Jun 24, 2021
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Jackson Dempsey: RHP/3B, (2025) Marysville, OH. 6-foot-2, 175-pound. Solid on the mound, had a high ¾ arm angle and a loose arm action with some arm speed. Tall-and-fall type pitcher who shows some effort. Displays downhill shoulders with a strong balance point. Has slight running action. (Max spin 1837; Avg 1759). Shows a 11/5 curveball with some action. (Max spin 1779; Avg 1647). Shows a 10/4 slider with late action. (Max spin 1839; Avg 1751).
Jackson Dempsey: RHP/3B, (2025) Marysville, OH. 6-foot, 140-pound. During batting practice, the right-handed hitter had a max exit velocity of 81 mph. (64.99 mph bat speed average). (20.55 mph hand speed average). Began in a balanced tall stance with a tight load, then used a controlled stride. Had an upward swing plane, efficient bat speed and high finish. Solid in the infield, his best throw was recorded at 71 mph; has a natural exchange, consistent hands, and choppy developing feet. Movements laterally were athletic and he fields the ball out front. Used a high ¾ slot with a long arm action. Clocked a time of 8.25 in the 60-yard dash. On the mound, showed good arm speed with a high ¾ arm angle and a long loose arm action. Tall-and-fall type pitcher and shows easy effort. Threw his fastball 72-76 mph; showed slight running action with heavy movement. (Max spin 1614; Avg 1480). Has sweeping action on his 11/5 curveball (60-62). (Max spin 1472; Avg 1384).