@Chase_Hemmer 22.3
Hand Speed (max)
2/16/26
CLASS OF 2028
OF
RHP
Chase
Hemmer
Hickman (HS) • MO
6' 2" • 160LBS
L/R • 16yr 5mo
Travel Team: Natty State 16U
6' 2" • 160LBSL/R • 16yr 5mo
Travel Team: Natty State 16U
Rankings
2028 National
Rankings available to Premium Subscriber
2028 State
Rankings available to Premium Subscriber
Commitment
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Best Of Stats
66.4
Bat Speed (max)
2/16/26
11.5
Rot. Acc (max)
2/16/26
67
Hard Hit %
6/09/26
97.4
Exit Velocity (max)
6/09/26
90.3
Exit Velocity (avg)
6/09/26
353
Distance (max)
2/16/26
44
Sweet Spot %
6/09/26
6.98
60-yd
6/09/26
3.89
30-yd
6/09/26
1.65
10-yd
6/09/26
19.9
Run speed (max)
6/09/26
-
INF Velo
85
OF Velo
2/16/26
-
C Velo
-
Pop Time
Fastball
82
Velocity (max)
2/16/26
79.4 - 81.3
Velo Range
2/16/26
2259
Spin Rate (avg)
2/16/26
Changeup
71 - 74
Velo Range
2/16/26
1702
Spin Rate (avg)
2/16/26
Curveball
71 - 73
Velo Range
6/04/26
2496
Spin Rate (avg)
2/16/26
Slider
69 - 71.2
Velo Range
2/16/26
2549
Spin Rate (avg)
2/16/26
Positional Tools
2026
2025
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)
6.98
Home to First
The athlete's fastest home-to-first time in the given event year. Measured from bat-on-ball to foot-on-bag, in seconds (s).
4.0
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
85.0
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.
14.0
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.06
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
84.0
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.
13.0
Hitting
2026
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
97.4
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
83.3
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
353
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
175
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
16.5229
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).
91.5
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
81.6
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
292
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
132
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
7.5636
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.
Missouri State Games
Jun 9, 2026
Trackman - Hitting
97.4
Exit Velocity (max)
90.3
Exit Velocity (avg)
139
Distance (avg)
289
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Ground Ball %
St. Louis Preseason ID
Feb 16, 2026
Trackman - Hitting
93.5
Exit Velocity (max)
75.5
Exit Velocity (avg)
212
Distance (avg)
353
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
US Nationals & Affiliates Scout Day
Jun 3, 2025
Trackman - Hitting
91.5
Exit Velocity (max)
81.6
Exit Velocity (avg)
132
Distance (avg)
292
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2026
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
22.3
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.
66.4
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
64.4
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.
St. Louis Preseason ID
Feb 16, 2026
Blast - Hitting
22.3
Hand Speed (max)
21.0
Hand Speed (avg)
66.4
Bat Speed (max)
64.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2026
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.5
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.8
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).
2027
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.
25.7
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).
69.3
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).
2454
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).
72.6
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).
1702
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).
70.3
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).
2392
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).
80.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
77.3
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).
2052
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.
26.5
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).
63.1
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).
2296
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).
68.8
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).
1427
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).
Missouri State Games
Jun 9, 2026
Trackman - Fastball
79.7
Velocity (max)
77.5 - 79.2
Velo Range
76.7
Eff Velocity (avg)
2,140
Spin Rate (max)
1,969
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
70.6
Velocity (max)
70.2 - 70.6
Velo Range
68.6
Eff Velocity (avg)
2,507
Spin Rate (max)
2,398
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
71.4
Velocity (max)
69.8 - 71.0
Velo Range
68.6
Eff Velocity (avg)
2,476
Spin Rate (max)
2,314
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
St. Louis Preseason ID
Feb 16, 2026
Trackman - Fastball
81.5
Velocity (max)
79.4 - 81.3
Velo Range
80.5
Eff Velocity (avg)
2,372
Spin Rate (max)
2,259
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
69.3
Velocity (max)
67.4 - 69.3
Velo Range
68.2
Eff Velocity (avg)
2,626
Spin Rate (max)
2,496
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
71.2
Velocity (max)
69.0 - 71.2
Velo Range
69.7
Eff Velocity (avg)
2,646
Spin Rate (max)
2,549
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - ChangeUp
74.0
Velocity (max)
71.3 - 73.9
Velo Range
71.9
Eff Velocity (avg)
1,775
Spin Rate (max)
1,702
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
US Nationals & Affiliates Scout Day
Jun 3, 2025
Trackman - Fastball
80.8
Velocity (max)
75.4 - 79.2
Velo Range
75.2
Eff Velocity (avg)
2,196
Spin Rate (max)
2,052
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
63.8
Velocity (max)
62.5 - 63.7
Velo Range
60.3
Eff Velocity (avg)
2,351
Spin Rate (max)
2,296
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
69.3
Velocity (max)
68.2 - 69.3
Velo Range
66.1
Eff Velocity (avg)
1,433
Spin Rate (max)
1,427
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Pitch Scores
2026
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
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
2026
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
78.7
Curveball
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
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.5
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
70.2
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
81.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
77.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
63.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
68.5
Game Performance
2026
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.65
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.89
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.98
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
RSI
The reactive strength index measurement of an athlete's explosiveness by comparing their jump height to the ground contact time in between their jumps. On a scale of 0-5.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.06
Missouri State Games
Jun 9, 2026
Vald
1.65
10-yd
3.89
30-yd
6.98
60-yd
19.9
Run speed (max)
1.00
RSI (max)
24.4
Jump Height (max)
Vizual Edge
2026
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.
56.36
Pitch Ai
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Physical
2026
Grip Strgth (LH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.
Grip Strgth (RH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.
Positional Profile: OF/RHP
Body: 6-1, 163-pounds. Lean frame with long levers.
Hit: LHH. Upright even setup with a balanced base, weight sitting on back side, and some bat movement pre pitch. Uses a toe tap trigger. Short flat path through the zone with an uphill finish. Some barrels, power present. 64.4 mph bat speed with 8 G's of rotational acceleration.
Power: 94 max exit velocity, averaged 75.5 mph. 353' max distance.
Arm: RH. OF-85 mph. Moderate stroke from a high 3/4 slot.
Defense: Developing actions defensively.