The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
6.76
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.
14.5
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
80.0
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.33
Outfield Velocity
The athlete's maximum throwing velocity from an outfield position in the given event year. Measured in miles per hour (MPH).
76.0
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.
11.6
60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.23
Outfield Velocity
The athlete's maximum throwing velocity from an outfield 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.
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.
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.
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.78
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.92
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
6.93
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.
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.78
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.06
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.30
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
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.
85.54
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.
Dylan Mamiya, Kennewick (WA), 2026 Positional Profile: OF/LHP Body: 5-9, 168-pounds. Hit: LHH. Relaxed setup with weight loaded slightly over rear leg. Quiet hands stacked horizontally over rear shoulder. Controlled leg lift load with quiet hands and head. Works upward through zone with some classic LH loft in swing. Bend in levers and extends to meet ball out front, rotating quickly. Repeatable 1H finish. 66.2 mph bat speed with 7 G's of rotational acceleration. Power: 91 max exit velocity, averaged 84.3 mph. 335' max distance. Arm: LH. OF-84 mph. High intent, high 3/4 slot release with cross-body action. Easy arm strength. Defense: Quick feet, attacks ball to work through throws. Consistently fields ball over gloveside leg. Momentum carried through throws. ATH: 6.95 runner in the 60. 29.90 max vertical.
Draft Reports
Contact
Premium Content Area
To unlock contact information, you need to purchase a ScoutPLUS subscription.
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/LHP
Body: 5-9, 168-pounds.
Hit: LHH. Relaxed setup with weight loaded slightly over rear leg. Quiet hands stacked horizontally over rear shoulder. Controlled leg lift load with quiet hands and head. Works upward through zone with some classic LH loft in swing. Bend in levers and extends to meet ball out front, rotating quickly. Repeatable 1H finish. 66.2 mph bat speed with 7 G's of rotational acceleration.
Power: 91 max exit velocity, averaged 84.3 mph. 335' max distance.
Arm: LH. OF-84 mph. High intent, high 3/4 slot release with cross-body action. Easy arm strength.
Defense: Quick feet, attacks ball to work through throws. Consistently fields ball over gloveside leg. Momentum carried through throws.
ATH: 6.95 runner in the 60. 29.90 max vertical.