Prep Baseball Report

CLASS OF 2026

OF
LHP

Dylan
Mamiya

Kennewick (HS) • WA
5' 8" • 175.5LBS
L/L • 17yr 3mo
Travel Team: New Level Stevenson/Tri City Titans AAA Legion

Rankings

2026 National

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2026 State

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Best of Snapshot
Physical
Positional Tools Velos / Pop
TrackMan Hitting
Blast
TrackMan Pitching
Pitch Scores
Pitching Velos
Swift
Visual Edge
News
Comments
Contact

Best Of Stats

Hitting
25.5
Hand Speed (max)
10/24/21
75.4
Bat Speed (max)
2/05/23
24.4
Rot. Acc (max)
10/24/21
60
Hard Hit %
7/30/24
Power
98.1
Exit Velocity (max)
7/24/24
89.9
Exit Velocity (avg)
7/30/24
341
Distance (max)
7/24/24
60
Sweet Spot %
7/30/24
Run
6.76
60
7/30/24
3.92
30-yd
7/24/24
1.78
10-yd
2/05/23
20.4
Run speed (max)
7/24/24
Defense
-
INF Velo
84
OF Velo
2/03/24
-
C Velo
-
Pop Time
Pitching

Fastball

78.2
Velocity (max)
2/05/23
75.8 - 77.4
Velo Range
2/05/23
1746
Spin Rate (avg)
2/05/23

Changeup

69.3 - 70.2
Velo Range
2/05/23
1362
Spin Rate (avg)
10/24/21

Curveball

63 - 63.1
Velo Range
6/11/22
1982
Spin Rate (avg)
6/12/21

Slider

64.7 - 66.1
Velo Range
2/05/23
1943
Spin Rate (avg)
2/05/23

Positional Tools

2024
2023
2022
2021
60 Yard Dash
6.76
Outfield Velocity
84.0
Power / Speed Score
14.5
Outfield Velocity
80.0
60 Yard Dash
7.33
Outfield Velocity
76.0
Power / Speed Score
11.6
60 Yard Dash
7.23
Outfield Velocity
71.0
Power / Speed Score
12.5
Pacific Northwest State Games (Invite-Only)
Jul 30, 2024
Position
6.76
60-yard
83
OF Velo
Power Speed Score
Future Games (Class of 2026/27)
Jul 24, 2024
Position
6.93
60-yard
81
OF Velo
Power Speed Score
Central Washington Preseason ID
Feb 3, 2024
Position
6.95
60-yard
84
OF Velo
Power Speed Score
Pacific Northwest Preseason ID
Feb 5, 2023
Position
80
OF Velo
Power Speed Score
Top Prospect Games: Underclass (Invite-Only)
Jun 11, 2022
Position
7.33
60-yard
76
OF Velo
85
Exit Velo
Power Speed Score
Underclass Fall Classic (2024-2026) - Invite Only
Oct 24, 2021
Position
7.23
60-yard
71
OF Velo
85
Exit Velo
Power Speed Score
2021 Junior Future Games
Jul 28, 2021
Position
7.29
60-yard
70
OF Velo
82
Exit Velo
PBR Junior Future Games
Jul 28, 2021
Position
7.29
60-yard
70
OF Velo
82
Exit Velo
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Position
7.38
60-yard
70
OF Velo
90
Exit Velo
Power Speed Score

Hitting

2024
2023
2022
2021
Exit Velocity Max
98.1
Exit Velocity Avg
86.6
Distance Max
341
Distance Avg
222
Launch Angle Avg
16.8
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
87.4
Exit Velocity Avg
81.5
Distance Max
281
Distance Avg
131
Launch Angle Avg
8.5
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
85.0
Exit Velocity Avg
75.1
Distance Max
275
Distance Avg
183
Launch Angle Avg
17.9
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
90.2
Exit Velocity Avg
74.4
Distance Max
302
Distance Avg
138
Launch Angle Avg
14.4
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Pacific Northwest State Games (Invite-Only)
Jul 30, 2024
Trackman - Hitting
96.8
Exit Velocity (max)
89.9
Exit Velocity (avg)
193
Distance (avg)
290
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Future Games (Class of 2026/27)
Jul 24, 2024
Trackman - Hitting
98.1
Exit Velocity (max)
86.2
Exit Velocity (avg)
244
Distance (avg)
341
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Central Washington Preseason ID
Feb 3, 2024
Trackman - Hitting
91.3
Exit Velocity (max)
84.3
Exit Velocity (avg)
219
Distance (avg)
335
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Pacific Northwest Preseason ID
Feb 5, 2023
Trackman - Hitting
87.4
Exit Velocity (max)
81.5
Exit Velocity (avg)
131
Distance (avg)
281
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Top Prospect Games: Underclass (Invite-Only)
Jun 11, 2022
Trackman - Hitting
85.0
Exit Velocity (max)
75.1
Exit Velocity (avg)
183
Distance (avg)
275
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Underclass Fall Classic (2024-2026) - Invite Only
Oct 24, 2021
Trackman - Hitting
85.1
Exit Velocity (max)
75.7
Exit Velocity (avg)
94
Distance (avg)
270
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
'21 JFG Workout (7/28)
Jul 28, 2021
Trackman - Hitting
82.4
Exit Velocity (max)
71.1
Exit Velocity (avg)
149
Distance (avg)
260
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Trackman - Hitting
90.2
Exit Velocity (max)
74.7
Exit Velocity (avg)
193
Distance (avg)
302
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2024
2023
2022
2021
Hand Speed Max
20.2
Hand Speed Avg
18.6
Bat Speed Max
69.7
Bat Speed Avg
65.9
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
19.9
Hand Speed Avg
18.3
Bat Speed Max
75.4
Bat Speed Avg
65.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
19.9
Hand Speed Avg
18.4
Bat Speed Max
68.2
Bat Speed Avg
62.5
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
25.5
Hand Speed Avg
21.2
Bat Speed Max
70.6
Bat Speed Avg
61.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Pacific Northwest State Games (Invite-Only)
Jul 30, 2024
Blast - Hitting
19.3
Hand Speed (max)
18.4
Hand Speed (avg)
68.9
Bat Speed (max)
66.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Future Games (Class of 2026/27)
Jul 24, 2024
Blast - Hitting
20.2
Hand Speed (max)
19.0
Hand Speed (avg)
68.3
Bat Speed (max)
65.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Central Washington Preseason ID
Feb 3, 2024
Blast - Hitting
19.9
Hand Speed (max)
18.4
Hand Speed (avg)
69.7
Bat Speed (max)
66.2
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pacific Northwest Preseason ID
Feb 5, 2023
Blast - Hitting
19.9
Hand Speed (max)
18.3
Hand Speed (avg)
75.4
Bat Speed (max)
65.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Top Prospect Games: Underclass (Invite-Only)
Jun 11, 2022
Blast - Hitting
19.9
Hand Speed (max)
18.4
Hand Speed (avg)
68.2
Bat Speed (max)
62.5
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Underclass Fall Classic (2024-2026) - Invite Only
Oct 24, 2021
Blast - Hitting
25.5
Hand Speed (max)
23.4
Hand Speed (avg)
70.6
Bat Speed (max)
65.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
'21 JFG Workout (7/28)
Jul 28, 2021
Blast - Hitting
20.1
Hand Speed (max)
19.4
Hand Speed (avg)
64.7
Bat Speed (max)
61.6
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Blast - Hitting
20.0
Hand Speed (max)
19.2
Hand Speed (avg)
58.2
Bat Speed (max)
52.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2023
2022
2021
Fastball
Velocity Max
78.2
Fastball
Velocity Avg
76.6
Fastball
Spin Rate Avg
1746
Fastball
Spin Score Avg
22.8
Fastball
Total Movement Avg
Slider
Velocity Avg
65.4
Slider
Spin Rate Avg
1943
Slider
Total Movement Avg
Splitter
Velocity Avg
69.7
Splitter
Spin Rate Avg
995
Splitter
Total Movement Avg
Fastball
Velocity Max
77.6
Fastball
Velocity Avg
75.7
Fastball
Spin Rate Avg
1728
Fastball
Spin Score Avg
22.8
Fastball
Total Movement Avg
Curveball
Velocity Avg
63.1
Curveball
Spin Rate Avg
1754
Curveball
Total Movement Avg
Changeup
Velocity Avg
68.9
Changeup
Spin Rate Avg
777
Changeup
Total Movement Avg
Fastball
Velocity Max
73.8
Fastball
Velocity Avg
71.5
Fastball
Spin Rate Avg
1634
Fastball
Spin Score Avg
22.9
Fastball
Total Movement Avg
Curveball
Velocity Avg
55.8
Curveball
Spin Rate Avg
1857
Curveball
Total Movement Avg
Changeup
Velocity Avg
62.0
Changeup
Spin Rate Avg
1359
Changeup
Total Movement Avg
Pacific Northwest Preseason ID
Feb 5, 2023
Trackman - Fastball
78.2
Velocity (max)
75.8 - 77.4
Velo Range
74.5
Eff Velocity (avg)
1,927
Spin Rate (max)
1,746
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
66.3
Velocity (max)
64.7 - 66.1
Velo Range
62.7
Eff Velocity (avg)
2,036
Spin Rate (max)
1,943
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Splitter
70.4
Velocity (max)
69.3 - 70.2
Velo Range
67.6
Eff Velocity (avg)
736
Spin Rate (max)
995
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Top Prospect Games: Underclass (Invite-Only)
Jun 11, 2022
Trackman - Fastball
77.6
Velocity (max)
74.6 - 76.8
Velo Range
74.1
Eff Velocity (avg)
1,899
Spin Rate (max)
1,728
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
63.1
Velocity (max)
63.0 - 63.1
Velo Range
60.9
Eff Velocity (avg)
1,834
Spin Rate (max)
1,754
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
69.2
Velocity (max)
68.6 - 69.2
Velo Range
67.2
Eff Velocity (avg)
894
Spin Rate (max)
777
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Underclass Fall Classic (2024-2026) - Invite Only
Oct 24, 2021
Trackman - Fastball
70.9
Velocity (max)
69.9 - 70.9
Velo Range
1,710
Spin Rate (max)
1,647
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
58.0
Velocity (max)
52.9 - 57.4
Velo Range
1,614
Spin Rate (max)
1,605
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - ChangeUp
62.8
Velocity (max)
61.4 - 62.7
Velo Range
59.7
Eff Velocity (avg)
1,367
Spin Rate (max)
1,362
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Trackman - Fastball
73.8
Velocity (max)
71.0 - 73.4
Velo Range
69.4
Eff Velocity (avg)
1,723
Spin Rate (max)
1,624
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
57.2
Velocity (max)
56.2 - 57.1
Velo Range
53.6
Eff Velocity (avg)
2,031
Spin Rate (max)
1,982
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
63.0
Velocity (max)
60.9 - 63.0
Velo Range
60.2
Eff Velocity (avg)
1,398
Spin Rate (max)
1,357
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %

Pitch Scores

2023
2021
Fastball
Rise+
Slider
Hammer+
Slider
Sweep+
Fastball
Rise+
Curveball
Hammer+
Curveball
Sweep+
Pacific Northwest Preseason ID
Feb 5, 2023
Pitch Scores - Fastball
Rise+
Pitch Scores - Slider
Hammer+
Sweep+
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Pitch Scores - Fastball
Rise+
Pitch Scores - Curveball
Hammer+
Sweep+

Pitching Velos

2023
2021
Fastball
Velocity Max
78.0
Fastball
Velocity Avg
76.5
Slider
Velocity Avg
65.5
Fastball
Velocity Max
74.0
Fastball
Velocity Avg
70.7
Curveball
Velocity Avg
56.3
Changeup
Velocity Avg
61.8
Pacific Northwest Preseason ID
Feb 5, 2023
Pitching
78
Max FB
76 - 77
FB
65 - 66
SL
69 - 70
SPL
Underclass Fall Classic (2024-2026) - Invite Only
Oct 24, 2021
Pitching
71
Max FB
69 - 70
FB
54 - 58
CB
61 - 62
CH
2021 Junior Future Games
Jul 28, 2021
Pitching
72
Max FB
69 - 72
FB
56 - 59
CB
Upperclass Summer Showcase (2022-2023)
Jun 12, 2021
Pitching
74
Max FB
71 - 73
FB
54 - 57
CB
61 - 63
CH

Game Performance

2024
2023
10 Yard Dash
1.78
30 Yard Dash
3.92
60 Yard Dash
6.93
Top Speed (MPH)
RSi
Vertical Jump
10 Yard Dash
1.78
30 Yard Dash
4.06
60 Yard Dash
7.30
Top Speed (MPH)
Vertical Jump
Future Games (Class of 2026/27)
Jul 24, 2024
Swift
1.78
10-yd
3.92
30-yd
6.93
60-yd
20.4
Run speed (max)
2.62
RSi (max)
31.7
Jump Height (max)
Central Washington Preseason ID
Feb 3, 2024
Swift
2.24
RSi (max)
29.9
Jump Height (max)
Pacific Northwest Preseason ID
Feb 5, 2023
Swift
1.78
10-yd
4.06
30-yd
7.30
60-yd
19.0
Run speed (max)
1.20
RSi (max)
1,283
Jump Power (max)
27.2
Jump Height (max)
22.8
Jump Height (avg)

Visual Edge

2024
2023
Edge Score
85.54
Edge Score
72.1

Pitch Ai

Notes

Comments

2/03/24
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

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Physical

2024
Grip Strgth (LH)
Grip Strgth (RH)
Pacific Northwest State Games (Invite-Only)
Jul 30, 2024
Physical - Athlete
Grip Strgth (RH)
Grip Strgth (LH)
Future Games (Class of 2026/27)
Jul 24, 2024
Physical - Athlete
5' 8"
Ht
175.5
Wt
Body Fat %
SMM
Grip Strgth (RH)
Grip Strgth (LH)
FG Workout PNW/CA/Select
Jul 23, 2024
Physical - Athlete
5' 8"
Ht
175.5
Wt
Body Fat %
SMM
Grip Strgth (RH)
Grip Strgth (LH)
Central Washington Preseason ID
Feb 3, 2024
Physical - Athlete
Grip Strgth (RH)
Grip Strgth (LH)