@TristanM2030 83
Velocity (max)
12/30/25
CLASS OF 2030
LHP
OF
Tristan
Miyashiro
Casimir Middle (HS) • CA
5' 9" • 157.6LBS
L/L • 14yr 2mo
Travel Team: Braves Baseball Academy National 14U
5' 9" • 157.6LBSL/L • 14yr 2mo
Travel Team: Braves Baseball Academy National 14U
Commitment
UNCOMMITTED
Player has made a commitment?
Tell us where
Best Of Stats
Fastball
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
65 - 67
Velo Range
12/30/25
2123
Spin Rate (avg)
12/30/25
91.6
Exit Velocity (max)
12/30/25
76.2
Exit Velocity (avg)
12/30/25
277
Distance (max)
12/30/25
50
Sweet Spot %
12/30/25
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
7.22
60-yd
12/30/25
3.96
30-yd
12/30/25
1.67
10-yd
12/30/25
18.8
Run speed (max)
12/30/25
-
INF Velo
80
OF Velo
12/30/25
-
C Velo
-
Pop Time
Positional Tools
2025
Sign in to view rankings 
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
Hitting
2025
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
91.6
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
76.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
277
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
175
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
18.6377
Hard Hit %
Percentage of batted balls with exit velocities over 95 MPH in the given event year.
Sweet Spot %
Percentage of batted balls in the given event year with a launch angle between 8° and 32°.
Line Drive %
Percentage of batted balls with launch angles between 10 and 25 degrees in the given event year.
Fly Ball %
Percentage of batted balls with launch angles between 25 and 50 degrees in the given event year.
Ground Ball %
Percentage of batted balls with launch angles below 10 degrees in the given event year.
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
The highest Peak Hand Speed of any swing in the given event year.
20.9
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
19.9
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
77.4
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
72.0
Rotational Acceleration Max
The highest Rotational Acceleration of any swing in the given event year.
Rotational Acceleration Avg
The average Rotational Acceleration for all swings in the given event year.
On-Plane Efficiency Max
The highest On-Plane Efficiency of any swing in the given event year.
On-Plane Efficiency Avg
The average On-Plane Efficiency for all swings in the given event year.
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
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
82.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
81.9
Fastball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
2098
Fastball
Spin Score Avg
The average Bauer Units value of all fastballs in the given event year. Bauer Units are calculated for each pitch by dividing Spin Rate by Velocity.
25.6
Fastball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
66.0
Curveball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
2123
Curveball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
67.6
Changeup
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
1039
Changeup
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
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+
A fastball with hop has a flat approach angle and visually jumps through the zone. When thrown up in the zone, it is more likely to generate a higher swing and miss average. Hop+ of 100 is MLB average.
Fastball
Sink+
A fastball with sink has low backspin and drops through the strike zone. When thrown down in the zone, it is more likely to generate a higher ground ball percentage and lower launch angle. Sink+ 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.
Pitching Velos
2025
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
83.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
82.0
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
66.0
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
67.5
Game Performance
2025
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.67
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
3.96
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
7.22
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.
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
News
Comments
Draft Reports
Contact
Premium Content Area
To unlock contact information, you need to purchase a ScoutPLUS subscription.
Purchase Subscription OR
Login
Physical
2025
Grip Strgth (LH)
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.
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.
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.
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.