@mamiya_dylan 25.5
Hand Speed (max)
10/24/21
CLASS OF 2026
OF
LHP
Dylan
Mamiya
Kennewick (HS) • WA
5' 9" • 184.8LBS
L/L • 19yr
Travel Team: New Level Stevenson
5' 9" • 184.8LBSL/L • 19yr
Travel Team: New Level Stevenson
Rankings
2026 National
Rankings available to Premium Subscriber
2026 State
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
75.4
Bat Speed (max)
2/05/23
24.4
Rot. Acc (max)
10/24/21
60
Hard Hit %
7/30/24
99
Exit Velocity (max)
2/01/25
89.9
Exit Velocity (avg)
7/30/24
350
Distance (max)
10/03/25
80
Sweet Spot %
2/01/25
6.76
60-yd
7/30/24
3.82
30-yd
7/29/25
1.62
10-yd
10/03/25
20.4
Run speed (max)
7/24/24
-
INF Velo
87
OF Velo
10/03/25
-
C Velo
-
Pop Time
Fastball
84.2
Velocity (max)
10/03/25
80.9 - 83.4
Velo Range
10/03/25
2203
Spin Rate (avg)
10/03/25
Changeup
70.9 - 73
Velo Range
2/01/25
1362
Spin Rate (avg)
10/24/21
Curveball
70 - 70
Velo Range
10/03/25
2167
Spin Rate (avg)
10/03/25
Slider
69.9 - 72.5
Velo Range
10/03/25
2269
Spin Rate (avg)
10/03/25
Game Performance
Notes
News
- Washington Rankings Update - 2026's - Dec 9, 2025
- 2025 West Coast Games - Team PNW Quick Hits - Oct 8, 2025
- 2025 West Coast Games - Team PNW Roster Preview - Oct 2, 2025
- Washington Top 10 Uncommitted 2026's - Outfielders - Sep 23, 2025
- Washington Uncommitted Spotlight - '26 OF/LHP Dylan Mamiya - May 19, 2025
- Ten Washington High School Matchups to Circle in 2025 - Mar 10, 2025
- WA Playoff Round Up (5.1.24 - 5.11.24) - May 13, 2024
- WA Power 25 Weekly Round Up (4.27.24 - 5.2.24) - May 3, 2024
- WA Power 25 Weekly Round Up (4.22.24 - 4.26.24) - Apr 26, 2024
- WA Power 25 Weekly Round Up (4.19.24 - 4.20.24) - Apr 22, 2024
- WA Power 25 Weekly Round Up (3.29.24 - 4.4.24) - Apr 4, 2024
- WA Power 25 Weekly Round Up (3.18.24 - 3.23.24) - Mar 24, 2024
- WA Power 25 Weekly Round Up (3.8.24 - 3.15.24) - Mar 17, 2024
- WA/OR Best of 2021: Statistical Standouts In The 2025 Class - Jan 19, 2022
Comments
Draft Reports
Contact
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Positional Profile: OF/LHP
Body: 5-8, 178-pounds.
Delivery: Slight bend in rear knee, working from stretch position. Sets from 3B side of the rubber with hands at belt. Rides rear leg downhill with simple leg lift and drop. Head stays locked on target throughout. Controlled deceleration.
Arm Action: LH. Hands raise and break at the letters. Clean, quick arm action into 3/4 slot release. Some arm recoil on follow with tucked gloveside.
FB: T82, 82-82 mph. T2175, 2018 average rpm.
SL: 68-71 mph. T2223, 2181 average rpm.
SPLT: 71-73 mph.
ATH: 6.84 runner in the 60.
Positional Profile: OF/LHP
Body: 5-8, 178-pounds.
Hit: LHH. Some bend in knees in balanced base at stance. Higher back elbow with knob pointed at catcher. Short stride load as hands retract slightly. Taller posture with uphill barrel path through the zone. Athletic movements with some twitch present. Extends to meet ball out front with firm front side at contact. Whippy one-hand finish. 66.7 mph bat speed with 8 G's of rotational acceleration.
Power: 99 max exit velocity, averaged 87.5 mph. 338' max distance.
Arm: LH. OF-83 mph. 3/4 slot release with tucked gloveside follow. Some cross-body action on the finish with body falling off to glove side post-release.
Defense: Ultra-quick first step, with athletic, quick bounce in step. Fields ball over lead gloveside leg with momentum carried through throws.
ATH: 6.84 runner in the 60.
Vizual Edge: 78.33 Edge Score
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.