Prep Baseball Report
Tristan Miyashiro
Tristan Miyashiro

CLASS OF 2030

LHP
OF

Tristan
Miyashiro

Harvard-Westlake (HS) • CA
5' 8" • 162.7LBS
L/L • 14yr 5mo
Travel Team: Braves Baseball Academy National 14U

Commitment

UNCOMMITTED
Player has made a commitment?
Tell us where

Videos

This Area is only available to Prep Baseball Plus subscribers.

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

Best Of Stats

Pitching

Fastball

83
Velocity (max)
12/30/25
81 - 83
Velo Range
12/30/25
2098
Spin Rate (avg)
12/30/25

Changeup

65.8 - 69.4
Velo Range
12/30/25
1039
Spin Rate (avg)
12/30/25

Curveball

67.1 - 69.5
Velo Range
5/03/26
2123
Spin Rate (avg)
12/30/25
Power
91.6
Exit Velocity (max)
12/30/25
82.4
Exit Velocity (avg)
5/03/26
326
Distance (max)
5/03/26
50
Sweet Spot %
12/30/25
Hitting
20.9
Hand Speed (max)
12/30/25
77.4
Bat Speed (max)
12/30/25
8.3
Rot. Acc (max)
12/30/25
13
Hard Hit %
12/30/25
Run
7.03
60-yd
5/03/26
3.96
30-yd
12/30/25
1.67
10-yd
12/30/25
18.8
Run speed (max)
12/30/25
Defense
-
INF Velo
83
OF Velo
5/03/26
-
C Velo
-
Pop Time

Positional Tools

2026
2025
Outfield Velocity
83.0
Outfield Velocity
80.0

Hitting

2026
2025
Exit Velocity Max
88.3
Exit Velocity Avg
82.4
Distance Max
326
Distance Avg
136
Launch Angle Avg
7.5816
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
91.6
Exit Velocity Avg
76.2
Distance Max
277
Distance Avg
175
Launch Angle Avg
18.6377
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
SoCal Rising Stars Game (Invite-Only)
May 3, 2026
Trackman - Hitting
88.3
Exit Velocity (max)
82.4
Exit Velocity (avg)
136
Distance (avg)
326
Distance (max)
Sweet Spot %
Fly Ball %
Ground Ball %
Orange County Preseason ID
Dec 30, 2025
Trackman - Hitting
91.6
Exit Velocity (max)
76.2
Exit Velocity (avg)
175
Distance (avg)
277
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2025
Hand Speed Max
20.9
Hand Speed Avg
19.9
Bat Speed Max
77.4
Bat Speed Avg
72.0
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Orange County Preseason ID
Dec 30, 2025
Blast - Hitting
20.9
Hand Speed (max)
19.9
Hand Speed (avg)
77.4
Bat Speed (max)
72.0
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2026
2025
Fastball
Velocity Max
82.8
Fastball
Velocity Avg
80.7
Fastball
Spin Rate Avg
1962
Fastball
Spin Score Avg
24.3
Fastball
Total Movement Avg
Curveball
Velocity Avg
68.3
Curveball
Spin Rate Avg
1912
Curveball
Total Movement Avg
Fastball
Velocity Max
82.8
Fastball
Velocity Avg
81.9
Fastball
Spin Rate Avg
2098
Fastball
Spin Score Avg
25.6
Fastball
Total Movement Avg
Curveball
Velocity Avg
66.0
Curveball
Spin Rate Avg
2123
Curveball
Total Movement Avg
Changeup
Velocity Avg
67.6
Changeup
Spin Rate Avg
1039
Changeup
Total Movement Avg
SoCal Rising Stars Game (Invite-Only)
May 3, 2026
Trackman - Fastball
82.8
Velocity (max)
79.7 - 81.7
Velo Range
79.5
Eff Velocity (avg)
2,032
Spin Rate (max)
1,962
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
69.9
Velocity (max)
67.1 - 69.5
Velo Range
67.1
Eff Velocity (avg)
1,994
Spin Rate (max)
1,912
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Orange County Preseason ID
Dec 30, 2025
Trackman - Fastball
82.8
Velocity (max)
81.1 - 82.7
Velo Range
79.0
Eff Velocity (avg)
2,154
Spin Rate (max)
2,098
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
66.8
Velocity (max)
65.1 - 66.8
Velo Range
63.2
Eff Velocity (avg)
2,178
Spin Rate (max)
2,123
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
69.4
Velocity (max)
65.8 - 69.4
Velo Range
65.0
Eff Velocity (avg)
1,100
Spin Rate (max)
1,039
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)

Pitch Scores

2025
Fastball
Hop+
Fastball
Sink+
Fastball
Rise+
Curveball
Hammer+
Curveball
Sweep+
Orange County Preseason ID
Dec 30, 2025
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+

Pitching Velos

2025
Fastball
Velocity Max
83.0
Fastball
Velocity Avg
82.0
Curveball
Velocity Avg
66.0
Changeup
Velocity Avg
67.5
Orange County Preseason ID
Dec 30, 2025
Pitching
83
Max FB
81 - 83
FB
65 - 67
CB
66 - 69
CH

Game Performance

2026
2025
60 Yard Dash
7.03
10 Yard Dash
1.67
30 Yard Dash
3.96
60 Yard Dash
7.22
Top Speed (MPH)
RSI
Vertical Jump
Orange County Preseason ID
Dec 30, 2025
Vald
1.67
10-yd
3.96
30-yd
7.22
60-yd
18.8
Run speed (max)
1.86
RSI (max)
22.2
Jump Height (max)

Vizual Edge

Pitch Ai

Notes

Comments

5/03/26
Tristan Miyashiro, Casimir Middle (CA), 2030
Positional Profile: LHP/OF
Body: 5-8, 163-pounds.
Delivery: Starts from the stretch. Stretch delivery with immediate leg lift from stance. Drives weight into rear leg. Strong hip-shoulder separation.
Arm Action: LH. 3/4 arm slot. Quick, full-circle arm back path. Quick, rapid release with a deceptive release point that can play with all pitches.
FB: Firm, shows some glove side movement.
CB: Slight dropping action. Shows slurve-like shape.
SL: Arm-side fade present.
5/03/26
Tristan Miyashiro, Casimir Middle (CA), 2030
Positional Profile: LHP/OF
Body: 5-8, 163-pounds.
Hit: LHH. Balanced, even lower half stance. Upper half is relaxed with hands at shoulder height and back elbow pointed towards the catcher. Small forward step stride to initiate load in hands. Hands cast outward slightly with hands firing first before hips. Shallow barrel path through zone.
Arm: LH. OF-83 mph. High 3/4 arm slot. Long, quick release. Aggressive throwing motion.
Defense: Approaches ball at an even pace. Quickens steps as ball gets closer. Quick, large crow hop to supply power to lower half.
5/03/26

Miyashiro earned his spot in the SoCal Rising Stars Game by attending the OC Preseason ID as the youngest player in attendance. Back in front of our staff about five months later, Miyashiro showed once again why he is going to be a name to keep tabs on when he matriculates into the Mission League at the powerhouse Harvard-Westlake program. Miyashiro shows real present two-way ability with a long-term potential to remain on both sides of the game. With a compact LH swing that produces intriguingly consistent solid contact both in BP (88.3 MPH max EV and 82.4 MPH avg EV) and during the game with a pair of hits in two at-bats, including a line drive double into the RCF gap after stinging a two-strike single, while drawing a walk. But, as solid as what Miyashiro does as a position player presently, don't discount his potential on the mound as a southpaw who presently shows a lively FB in the 80-83 MPH range with late life into the zone and an emerging CB that flashes sharp bite to induce whiff from both RHH and LHH hitters. Miyashiro punched out three of the five hitters he faced to put an exclamation mark on an outstanding showing, yet again for our staff.

12/30/25

Miyashiro may have been the youngest player in attendance as a 2030 graduate still in 8th grade, but the youngster did not lack for ability to hang with the older competition. Miyashiro is wiry and athletic in his build at present standing 5'9 with 157 lbs. on his frame, but has projection to add height/size as he continues maturing to upgrade his already strong foundation of tools. During the position player portion of the day Tristan flashed strong present athleticism, arm strength and offensive ability. He ran a 7.22 60 with 80 MPH OF arm velocity that allows you to dream on a long term CF/RF future for him defending in the OF. From there his swing has intriguing top end impact with a 91.6 MPH max EV that comes with 77.4 MPH of bat speed on the top end while showing quickness in the hand path at 20.9 MPH. Impressively for a young hitter he was able to produce at 50% sweet spot rate while also picking up a 13% hard hit rate. All of these skills would be competitive for an upperclass high school player, but on an 8th grade product you can't help, but dream on a bright future for him as a position player. But, even more impressively was the work the southpaw did during a bullpen session showcasing a well controlled delivery with sound repeatability and intriguing upside. Miyashiro tossed his FB in the 81.1-82.8 MPH range throughout his pen showing strong present feel for spin on the offering with an average of nearly 2100 RPMs. From there he mixed in an intriguing CB in the 65-67 MPH range with strong present spin on the offering averaging over 2100 RPMs with more to come as he fills out his frame and adds arm strength. As well, Miyashiro has feel for a solid CHG that has vertical separation off his FB shape and impressive feel for killing spin on the offering averaging 1039 RPMs of spin on the offering while throwing it at 66-69 MPH. Miyashiro quickly put himself on the radar for the upcoming Prep Baseball California Rising Stars series and the potential for a spot on the 2026 Team California Junior Future Games squad.

12/30/25

Tristan Miyashiro, Casimir Middle (CA), 2030
Positional Profile: LHP/OF Quick, twitchy, athletic mover both in the box, field, and on the mound.
Body: 5-9, 158-pounds. Younger and leaner build. Body is proportional and can easily add size as a '30 graduate.
Delivery: Linear delivery while getting into a strong back hip position. Rides the slope to generate his energy towards home plate. Stays back long enough to let his arm to get up on time.
Arm Action: LH. Longer arm action, good hip shoulder separation.
FB: T83, 81-83 mph. Spins the FB well for a younger arm. Velocity and action will improve with time. T2154, 2098 average rpm.
CB: 65-67 mph. Sweepy, slurvy profile. Late break and tunnels well with FB. T2178, 2123 average rpm.
CH: 66-69 mph. Slower CH that fades armside. Somewhat inconsistent but can be a great out pitch against righties. T1100, 1039 average rpm.
ATH: 7.22 runner in the 60. 1.67 and 3.96 in the 10 and 30 yard splits. 22.20 max vertical.

12/30/25

Tristan Miyashiro, Casimir Middle (CA), 2030
Positional Profile: LHP/OF Quick, twitchy, athletic mover both in the box, field, and on the mound.
Body: 5-9, 158-pounds. Younger and leaner build. Body is proportional and can easily add size as a '30 graduate.
Hit: LHH. Relaxed stance with pre-loaded hands to create torque. Fast hands, gets in slot well, and able to stay inside the ball with generating an avg 72mph bat speed.
Power: 92 max exit velocity, averaged 76.2 mph. 277' max distance.
Arm: LH. OF-80 mph. Strong arm and will only impove with time.
Defense: Good footwork, breaks down well while attacking the ball. Fields the ball off his lead leg (right foot).
ATH: 7.22 runner in the 60. 1.67 and 3.96 in the 10 and 30 yard splits. 22.20 max vertical.

Draft Reports

Contact

Premium Content Area

To unlock contact information, you need to purchase a ScoutPLUS subscription.

Purchase Subscription
OR
Login

Twitter

Physical

2025
Grip Strgth (LH)
Grip Strgth (RH)
Orange County Preseason ID
Dec 30, 2025
Physical - Athlete
5' 9"
Ht
157.6
Wt
Grip Strgth (RH)
Grip Strgth (LH)