@iammasonduncan 
91
Velocity (max)
6/24/25
CLASS OF 2027
RHP
Mason
Duncan
Flower Mound (HS) • TX
6' 5" • 246LBS
R/R • 17yr 2mo
Travel Team: Dallas Tigers 17U - Beavan/Killian
6' 5" • 246LBSR/R • 17yr 2mo
Travel Team: Dallas Tigers 17U - Beavan/Killian
Rankings
2027 National
Rankings available to Premium Subscriber
2027 State
Rankings available to Premium Subscriber
Commitment
Best Of Stats
Fastball
88.7 - 90.5
Velo Range
6/24/25
2033
Spin Rate (avg)
7/23/25
Changeup
78.3 - 81.1
Velo Range
1/11/26
1546
Spin Rate (avg)
1/11/26
Curveball
76.3 - 76.4
Velo Range
1/11/26
1700
Spin Rate (avg)
1/11/26
Slider
78.1 - 82.1
Velo Range
7/23/25
2147
Spin Rate (avg)
7/23/25
Positional Tools
Hitting
Hitting
Pitching
2026
2025
Sign in to view rankings 
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
90.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
89.2
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).
1992
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.
22.3
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).
76.3
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).
1700
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).
79.7
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).
1546
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).
80.0
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).
1886
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).
Sinker
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
85.4
Sinker
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).
1249
Sinker
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).
90.7
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
88.4
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).
1970
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.
22.3
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).
79.4
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).
1235
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).
79.7
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).
2108
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).
North Texas Preseason All-State (Invite-Only)
Jan 11, 2026
Trackman - Fastball
90.8
Velocity (max)
88.1 - 90.2
Velo Range
87.2
Eff Velocity (avg)
2,079
Spin Rate (max)
1,992
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
76.4
Velocity (max)
76.3 - 76.4
Velo Range
73.3
Eff Velocity (avg)
1,750
Spin Rate (max)
1,700
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Slider
81.4
Velocity (max)
79.1 - 81.0
Velo Range
77.5
Eff Velocity (avg)
2,002
Spin Rate (max)
1,886
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
81.1
Velocity (max)
78.3 - 81.1
Velo Range
78.4
Eff Velocity (avg)
2,065
Spin Rate (max)
1,546
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Sinker
86.8
Velocity (max)
84.6 - 86.3
Velo Range
83.3
Eff Velocity (avg)
1,406
Spin Rate (max)
1,249
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Future Games (Class of 2027)
Jul 23, 2025
Trackman - Fastball
90.4
Velocity (max)
86.6 - 89.4
Velo Range
87.3
Eff Velocity (avg)
2,257
Spin Rate (max)
2,033
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
83.9
Velocity (max)
78.1 - 82.1
Velo Range
78.7
Eff Velocity (avg)
2,344
Spin Rate (max)
2,147
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
81.2
Velocity (max)
80.0 - 81.0
Velo Range
79.9
Eff Velocity (avg)
1,698
Spin Rate (max)
1,328
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
2025 Future Games Tryouts: Austin (Invite-Only)
Jun 24, 2025
Trackman - Fastball
90.7
Velocity (max)
88.7 - 90.5
Velo Range
90.9
Eff Velocity (avg)
1,984
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 %
Spin Efficiency % (avg)
Trackman - Slider
79.8
Velocity (max)
77.3 - 79.8
Velo Range
79.5
Eff Velocity (avg)
2,199
Spin Rate (max)
2,024
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
75.3
Velocity (max)
76.5
Eff Velocity (avg)
861
Spin Rate (max)
861
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Pitch Scores
Pitching Velos
2026
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
91.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
89.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
79.5
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
80.0
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
91.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
88.8
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
74.5
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
76.0
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
79.5
Game Performance
2026
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Vizual Edge
Pitch Ai
Notes
News
- North Texas Preseason All-State: Pitcher Analysis - Feb 5, 2026
- 2026 Preseason All-State Leaderboard: Max Fastball Velocity - Jan 21, 2026
- North Texas Preseason All-State: Pitcher Data Dive - Jan 15, 2026
- North Texas Preseason All-State: 2026/2027 Quick Hits - Jan 14, 2026
- North Texas Preseason All-State: Statistical Analysis - Jan 13, 2026
- North Texas Preseason All-State: Preview - Jan 9, 2026
- 2025 Summer Invite-Only Rewind: Max Fastball Velocity - Oct 13, 2025
- Future Games Quick Hits: Texas Pitchers - Jul 31, 2025
- 2025 Future Games Preview: Texas Pitchers - Jul 18, 2025
- 2025 Future Games Tryout Austin: Pitcher Data Dive - Jun 30, 2025
- 2025 Future Games Tryout Austin: Statistical Analysis - Jun 25, 2025
- 2025 Texas High School Heat Sheet - May 20, 2025
- Director's List: 2027's That Are Making Noise - Apr 3, 2025
- Texas Class of 2027 Rankings Update (February 2025) - Feb 17, 2025
Comments
Draft Reports
Contact
Premium Content Area
To unlock contact information, you need to purchase a ScoutPLUS subscription.
Purchase Subscription OR
Login
Mason Duncan, Flower Mound (TX), 2027
Positional Profile: RHP RHP Projects well physically. Width to back and shoulders, solid lower. Will add strength. Imposing on the mound. Repeats delivery, arm works well, side arm slot. FB has action with tail, tail/sink and 2 seamer with sink. Showing ability to manipulate slider, will get some swing and miss on chase. Change with solid turnover action. RHP with solid stuff, versatility to role on the mound. Watch progress. Will continue to improve.
Body: 6-5, 246-pounds. Great build/frame to add strength. Width to shoulders and back. Solid lower.
Delivery: Lots of movement to delivery. Side step rocker, high knee lift with inward turn of hip and shoulder. Stride leg works down the slope, lands online. Chest over front leg, spinoff finish.
Arm Action: RH. Full circle with length, side arm slot with arm speed. Crossbody finish.
FB: T91, 88-90 mph. Tail action to both sides of plate. 2 seamer with sink/tail. Around zone with stuff. Effective FB with action present. Can elevate up in zone for success. T2079, 1992 average rpm.
CB: 76-76 mph. T1750, 1700 average rpm.
SL: 79-81 mph. Varies action, sweepy/slurvy type. Shows ability to manipulate action. Will develop ability to add/subtract off pitch. Will get swing and miss. T2002, 1886 average rpm.
CH: 78-81 mph. Turnover sink/tail. Deception present. Good pitch. T2065, 1546 average rpm.
ATH: 21.90 max vertical.