@ThomasHbaseball 
88
Velocity (max)
9/25/25
CLASS OF 2024
RHP
Thomas
Harmsworth
Pratt CC
Kincardine District (HS) • ON
5' 11" • 187LBS
L/R • 20yr 1mo
Travel Team: Ontario Nationals
Kincardine District (HS) • ON
5' 11" • 187LBS
L/R • 20yr 1mo
Travel Team: Ontario Nationals
Rankings
2024 National
Rankings available to Premium Subscriber
2024 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
86 - 88
Velo Range
9/25/25
2249
Spin Rate (avg)
9/16/23
Changeup
76 - 80
Velo Range
9/25/25
1527
Spin Rate (avg)
9/16/23
Curveball
74.7 - 75.2
Velo Range
9/17/25
1618
Spin Rate (avg)
9/17/25
Slider
74.5 - 79.7
Velo Range
9/17/25
1763
Spin Rate (avg)
9/17/25
Positional Tools
Hitting
Hitting
Pitching
2025
2023
2022
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
87.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
86.5
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).
2152
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.
24.9
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
74.9
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).
1618
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
77.1
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).
1763
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
79.2
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
78.0
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).
2249
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.
28.8
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).
70.8
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).
1238
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).
70.9
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).
1527
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).
76.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
74.4
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).
1763
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.
23.7
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).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
63.6
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).
1209
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).
66.7
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).
1312
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).
KJCCC Sophomore Showcase
Sep 17, 2025
Trackman - Fastball
87.3
Velocity (max)
86.0 - 86.9
Velo Range
86.3
Eff Velocity (avg)
2,187
Spin Rate (max)
2,152
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Curveball
75.2
Velocity (max)
74.7 - 75.2
Velo Range
73.3
Eff Velocity (avg)
1,640
Spin Rate (max)
1,618
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Slider
80.8
Velocity (max)
74.5 - 79.7
Velo Range
75.4
Eff Velocity (avg)
1,921
Spin Rate (max)
1,763
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2023 Ontario Nationals Scout Day
Sep 16, 2023
Trackman - Fastball
79.2
Velocity (max)
77.2 - 78.7
Velo Range
77.6
Eff Velocity (avg)
2,378
Spin Rate (max)
2,249
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
71.6
Velocity (max)
69.9 - 71.6
Velo Range
69.5
Eff Velocity (avg)
1,298
Spin Rate (max)
1,238
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
77.6
Velocity (max)
68.4 - 74.2
Velo Range
71.0
Eff Velocity (avg)
2,143
Spin Rate (max)
1,527
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2022 Ontario Nationals Scout Day
Sep 25, 2022
Trackman - Fastball
76.8
Velocity (max)
73.0 - 75.9
Velo Range
72.5
Eff Velocity (avg)
2,016
Spin Rate (max)
1,763
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
68.4
Velocity (max)
65.0 - 68.4
Velo Range
1,380
Spin Rate (max)
1,312
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
64.0
Velocity (max)
63.3 - 64.0
Velo Range
1,352
Spin Rate (max)
1,209
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Pitch Scores
2023
Fastball
Hop+
A fastball with hop has a flat approach angle and visually jumps through the zone. When thrown up in the zone, it is more likely to generate a higher swing and miss average. Hop+ of 100 is MLB average.
Fastball
Sink+
A fastball with sink has low backspin and drops through the strike zone. When thrown down in the zone, it is more likely to generate a higher ground ball percentage and lower launch angle. Sink+ of 100 is MLB average.
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
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.
Pitching Velos
2025
2022
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
88.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
87.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
71.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
78.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.5
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)
73.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
63.5
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
66.0
Game Performance
2022
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
2022 Ontario Nationals Scout Day
Sep 25, 2022
Swift
1.20
RSI (max)
1.20
RSI (avg)
1,543
Jump Power (max)
20.5
Jump Height (max)
20.2
Jump Height (avg)
Vizual Edge
Pitch Ai
Notes
News
Comments
10/21/23
2024 RHP Thomas Harmsworth was one of the better arms we saw out of the Ontario Nationals. Making 3 appearances throughout the trip, Thomas was able to showcase his high pitch ability, consistently attacking hitters early in counts and showing feel with all 3 of his pitches. CB has a vertical look to it, generating swing and miss with it. There was no shortage of strikes when Harmsworth was on the mound. An uncommitted 2024 RHP, who can work deep into appearances and throw multiple pitches for strikes.
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