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 8mo
Travel Team: Braves Baseball Academy National 14U

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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

Game Performance

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.

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