Prep Baseball Report

Seattle Preseason ID, Session II - Positional Data Dive


Dylan Grenz
Associate Scout

On Saturday, February 10th, Prep Baseball Washington staff hosted the Seattle Preseason ID - Session II at Mariners Training Center in Puyallup, WA. Featuring prospects in the 2024-2028 classes, over 40 players from across the state participated in this pro-style workout. The event included unrivaled access to data through our state-of-the-art technology partners, as well as in-depth scouting analysis from our Prep Baseball Washington staff.

Preseason ID events serve as an important tool for both PBR scouts and college recruiters, who will subsequently create lists of prospects to follow as they plan their spring coverage. We also tend to see prospects’ best performances in the preseason, as most athletes are fresh and coming off of strict and targeted off-season training programs that have resulted in big gains, primed for updating their Prep Baseball profile. Exceptional performances lend the opportunity to secure invitations to some of the summer's biggest invite-only events, including Top Prospect Games, Prep Baseball Future Games, and more.

Earlier this week, we published our Quick Hits, where we dove into some of the top players from the event, and our Statistical Analysis, where we broke down the stat leaders from the more traditional categories. Today, we will take a further in-depth look at the positional player data, collected via Swift, Trackman, Blast, and Vizual Edge.

SWIFT + Athletic Testing

30-YARD DASH

Rank Name State School Class Pos 30-yd
1 Gabriel Prock WA Eastlake 2026 OF 3.81 s
2 Finn Magonegil WA Vashon Island 2024 OF 3.87 s
3 Jack Pritchard WA Roosevelt 2026 OF 3.93 s
4 Thoma Holden WA Federal Way 2025 SS 3.95 s
^ Lincoln Moore WA Kentlake 2028 SS 3.95 s
5 William Prinz WA Bishop Blanchet High School 2027 OF 3.96 s
^ Brady Miller WA North Creek 2025 OF 3.96 s

Grip Strength (Right)

Rank Name State School Class Pos Grip Strgth (RH)
1 Tate Stearns WA North Kitsap 2025 OF 152.0
2 Cayden Christopherson WA North Creek 2025 3B 145.4
3 Colby Bossert WA Henry M. Jackson 2026 1B 143.6
4 Christopher Moore WA Kentlake 2026 SS 131.3
5 Thoma Holden WA Federal Way 2025 SS 130.8

Grip Strength (Left)

Rank Name State School Class Pos Grip Strgth (LH)
1 Tate Stearns WA North Kitsap 2025 OF 158.2
2 Carter Christiansen WA Fife 2025 C 146.1
3 Jacob Dale WA Kennedy Catholic 2026 SS 142.1
4 Thoma Holden WA Federal Way 2025 SS 137.0
5 Colby Bossert WA Henry M. Jackson 2026 1B 135.9


TRACKMAN

EXIT VELOCITY (MAX)

Rank
Name
State
School
Class POS Exit Velocity (Max)
1 Tate Stearns WA North Kitsap 2025 OF 98.8 mph
2 William Prinz WA Bishop Blanchet 2027 OF 96.2 mph
3 Braden Bartholomae WA Skyline 2025 OF 95.7 mph
4 Gregory Johnson WA Puyallup 2028 1B 95.2 mph
- Cayden Christopherson WA North Creek 2025 3B 95.2 mph
5 Carter Christiansen WA Fife 2025 C 95.0 mph
6 Christopher Moore WA Kentlake 2026 SS 93.5
7 Jackson Rankin WA Bellevue 2026 C 93.3 mph
8 Thoma Holden WA Federal Way 2025 SS 92.1 mph
9 Lucas Miller WA Bonney Lake 2026 3B 91.0 mph
10 Anthony Wagner WA Tahoma 2026 3B 90.0 mph

EXIT VELOCITY (AVG.)

Rank Name State School Class Pos Exit Velocity (avg)
1 Braden Bartholomae WA Skyline High School 2025 OF 90.0 mph
2 Cayden Christopherson WA North Creek 2025 3B 87.7 mph
3 Gregory Johnson WA Puyallup 2028 1B 87.4 mph
4 Thoma Holden WA Federal Way 2025 SS 87.0 mph
5 Christopher Moore WA Kentlake 2026 SS 86.6 mph
6 Carter Christiansen WA Fife 2025 C 86.0 mph
7 William Prinz WA Bishop Blanchet High School 2027 OF 85.7 mph
8 Tate Stearns WA North Kitsap 2025 OF 85.4 mph
9 Jackson Rankin WA Bellevue 2026 C 82.5 mph
10 Lincoln Moore WA Kentlake 2028 SS 82.1 mph

Exit Velocity: This metric measures the speed of the ball, measured in miles per hour, as it comes off the bat at the moment of contact.

BATTED BALL DISTANCE (MAX)

Rank Name State School Class Pos Distance (max)
1 Tate Stearns WA North Kitsap 2025 OF 361 ft
2 Carter Christiansen WA Fife 2025 C 357 ft
3 William Prinz WA Bishop Blanchet High School 2027 OF 352 ft
4 Braden Bartholomae WA Skyline High School 2025 OF 351 ft
5 Anthony Wagner WA Tahoma 2026 3B 343 ft

SWEET SPOT%

Rank Name State School Class Pos Sweet Spot %
1 Carter Christiansen WA Fife 2025 C 81 %
2 Carter Lystra WA Silas 2026 LHP 80 %
3 Landon Smith WA Silas 2026 RHP 76 %
^ Carter Madigan WA Inglemoor 2026 C 76 %
4 Will Turba WA Mercer Island 2026 RHP 75 %
^ Christopher Moore WA Kentlake 2026 SS 75 %
5 Bradley Dinelt WA Curtis 2026 OF 74 %

Sweet Spot percentage: This metric is determined by how often the player produces a batted ball during the session with a launch angle between 8 to 32 degrees.


BLAST MOTION

PEAK HAND SPEED (AVG.)

Rank Name State School Class Pos Hand Speed (avg)
1 Christopher Moore WA Kentlake 2026 SS 22.0 mph
2 Cayden Christopherson WA North Creek 2025 3B 22.0 mph
3 Will Turba WA Mercer Island 2026 RHP 21.8 mph
4 Tate Stearns WA North Kitsap 2025 OF 21.7 mph
5 James Mangold WA Mercer Island 2025 2B 21.6 mph
6 Carter Madigan WA Inglemoor 2026 C 21.2 mph
7 Carter Lystra WA Silas 2026 LHP 21.2 mph
8 Anthony Wagner WA Tahoma 2026 3B 21.1 mph
9 Gregory Johnson WA Puyallup 2028 1B 21.1 mph
10 Lincoln Moore WA Kentlake 2028 SS 21.1 mph

Hand Speed: The observed speed as measured on the handle of the bat (measured six inches from the knob of the bat). Peak Hand Speed will occur prior to the moment of impact, very close to the commit time in the swing when the wrists unhinge.

PEAK BAT SPEED (AVG.)

Rank Name State School Class Pos Bat Speed (avg)
1 Braden Bartholomae WA Skyline High School 2025 OF 74.7 mph
2 Gabriel Prock WA Eastlake 2026 OF 74.2 mph
3 Christopher Moore WA Kentlake 2026 SS 72.1 mph
4 William Prinz WA Bishop Blanchet High School 2027 OF 71.9 mph
5 Tate Stearns WA North Kitsap 2025 OF 71.5 mph
6 Cayden Christopherson WA North Creek 2025 3B 70.3 mph
7 Ashton Bergman WA Henry M Jackson 2026 OF 69.5 mph
8 Kai Jambor WA Eastside Catholic 2026 C 69.3 mph
9 Thoma Holden WA Federal Way 2025 SS 69.2 mph
10 Carter Christiansen WA Fife 2025 C 69.2 mph

Bat Speed: The observed speed of the sweet spot of the bat at impact. The sweet spot of the bat is measured six inches from the tip of the bat.

ROTATIONAL ACCELERATION (AVG.)

Rank Name State School Class Pos Rot. Acc (avg)
1 Christopher Moore WA Kentlake 2026 SS 15.9 g
2 Cayden Christopherson WA North Creek 2025 3B 14.4 g
3 William Prinz WA Bishop Blanchet High School 2027 OF 14.0 g
4 Brady Miller WA North Creek 2025 OF 13.1 g
5 Thoma Holden WA Federal Way 2025 SS 12.6 g

Body Rotation: A swing that has the appropriate relative contributions of body and bat rotations is an efficient and Powerful swing that maintains proper sequencing. An efficient baseball swing is one in which the body creates the initial movements, which is then transferred to the arms and out to the bat, thereby maximizing Bat Speed through this proximal-to-distal kinematic sequencing movement pattern.

VIZUAL EDGE

EDGE SCORE

Rank Name State School Class Pos Edge Score
1 Tate Stearns WA North Kitsap 2025 OF 88.59
2 Finn Magonegil WA Vashon Island 2024 OF 79.43
3 DJ Baerwald WA Woodinville 2025 C 79.19
4 Braden Bartholomae WA Skyline High School 2025 OF 77.88
5 Izmael Hernandez WA Juanita 2027 OF 77.26

The Edge Score is a comprehensive score out of 100 that takes the core-six visual skills into account, providing athletes, parents, coaches and scouts with a benchmark number for assessing an athlete’s overall visual ability. In general the higher the Edge Score, the higher chance of athletic success. Think of the Edge Score as the 'Sixth Metric' in the standard Five-Tools that make up a ball player.

The average Edge Score for the 2020 MLB Draft Class was 79.3 (of hitters who completed a Vizual Edge test). MLB players we've worked with typically show stronger scores, with elite hitters scoring consistently above 87.0 on their Edge Score.

+ CLICK HERE for a look at the complete statistics from the event.

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