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2025 Seattle Summer ID Session III - Pitching Data Dive

July 13, 2025
Dylan Grenz
Associate Scout

On Monday July 7th, Prep Baseball Washington hosted the Seattle Summer ID - Session III at Island Crest Park in Mercer Island. Prep Baseball scouts evaluated high school athletes in the 2026-2029 graduating classes, with several strong showings throughout the event.

Summer ID events serve as an important tool for both Prep Baseball scouts and college recruiters, who will subsequently create lists of prospects to follow as they plan their remaining summer coverage. We often tend to see prospects' best showings at Summer ID events, as players are fresh off playing for their respective high schools and are in the routine that consistently playing in-game offers. Standout performances can lend invites to some of the summer's top events, including the 2025 Pacific Northwest State Games.

Earlier, we released our Quick Hits, detailing scouting notes on standout players from the event, our Statistical Analysis, looking at leaders in major stat categories, and our Positional Data Dive, looking specifically at leaders in position player data. Today, we conclude our post-event coverage with our Pitching Data Dive, examining leaders in pitching metrics at Island Crest Park. For all other post-event content, click here. 

Seattle Summer ID - Session III (7.7.25)

PEAK FB VELOCITY

Rank Name State School Class Pos Velocity (max)
1 Brayden McAllister WA Lakewood High School 2027 OF 87.0 mph
2 Greyson Arnold WA Bellevue High School 2026 RHP 84.4 mph
3 Matthew Hansen WA Mercer Island 2026 RHP 83.3 mph
4 Colby Andrews WA Olympic High School 2026 SS 82.0 mph
5 Marcos Park WA Liberty 2028 SS 80.8 mph
6 Maddux Phimmasane WA Kamiak 2027 OF 80.2 mph
7 Alex Martinez WA Mount Si 2026 RHP 80.1 mph
8 Liam Gustafson WA Tumwater 2027 1B 80.1 mph

EFFECTIVE FB VELOCITY AVG

Effective velocity is taking into account the velocity of each pitch, its release distance, the pitches time to the plate / hitting area, and the pitches movement.  With all of this information, Effective Velocity is allowing coaches and scouts to more accurately compare how a pitch is affecting a hitter.

Rank Name State School Class Pos Eff Velocity (avg)
1 Brayden McAllister WA Lakewood High School 2027 OF 83.6 mph
2 Greyson Arnold WA Bellevue High School 2026 RHP 82.0 mph
3 Matthew Hansen WA Mercer Island 2026 RHP 81.2 mph
4 Colby Andrews WA Olympic High School 2026 SS 79.3 mph
5 Marcos Park WA Liberty 2028 SS 78.1 mph
6 Alex Martinez WA Mount Si 2026 RHP 78.0 mph
7 Maddux Phimmasane WA Kamiak 2027 OF 77.4 mph
8 Liam Gustafson WA Tumwater 2027 1B 76.6 mph

PEAK FB SPIN RATE

Rank Name State School Class Pos Spin Rate (max)
1 Marcos Park WA Liberty 2028 SS 2449 rpm
2 Liam Gustafson WA Tumwater 2027 1B 2331 rpm
3 Alex Martinez WA Mount Si 2026 RHP 2321 rpm
4 Maddux Phimmasane WA Kamiak 2027 OF 2316 rpm
5 Colby Andrews WA Olympic High School 2026 SS 2191 rpm
6 Matthew Hansen WA Mercer Island 2026 RHP 1986 rpm
7 Cooper Thompson WA Archbishop Murphy 2028 RHP 1863 rpm
8 Brayden McAllister WA Lakewood High School 2027 OF 1846 rpm

AVG FB SPIN RATE

Rank Name State School Class Pos Spin Rate (avg)
1 Marcos Park WA Liberty 2028 SS 2338 rpm
2 Maddux Phimmasane WA Kamiak 2027 OF 2253 rpm
3 Alex Martinez WA Mount Si 2026 RHP 2228 rpm
4 Liam Gustafson WA Tumwater 2027 1B 2191 rpm
5 Colby Andrews WA Olympic High School 2026 SS 2106 rpm
6 Matthew Hansen WA Mercer Island 2026 RHP 1883 rpm
7 Cooper Thompson WA Archbishop Murphy 2028 RHP 1763 rpm
8 Greyson Arnold WA Bellevue High School 2026 RHP 1735 rpm

AVG INDUCED VERTICAL MOVEMENT

Rank Name State School Class Pos IVB (avg)
1 Alex Martinez WA Mount Si 2026 RHP 21.5 in
2 Brayden McAllister WA Lakewood High School 2027 OF 19.9 in
3 Maddux Phimmasane WA Kamiak 2027 OF 18.3 in
4 Matthew Hansen WA Mercer Island 2026 RHP 17.1 in
5 Colby Andrews WA Olympic High School 2026 SS 14.3 in
6 Marcos Park WA Liberty 2028 SS 14.0 in
7 Camden Bentley WA Gig Harbor 2027 RHP 12.8 in
8 Wyatt West WA Liberty High School 2029 SS 11.9 in

AVG HORIZONTAL MOVEMENT

Rank Name State School Class Pos HM (avg)
1 Cooper Thompson WA Archbishop Murphy 2028 RHP 16.4
2 Greyson Arnold WA Bellevue High School 2026 RHP 14.4
3 Wyatt West WA Liberty High School 2029 SS 13.8
4 Alex Martinez WA Mount Si 2026 RHP 13.4
5 Liam Gustafson WA Tumwater 2027 1B -11.1
6 Matthew Hansen WA Mercer Island 2026 RHP 9.0
7 Brayden McAllister WA Lakewood High School 2027 OF 6.3
8 Colby Andrews WA Olympic High School 2026 SS 6.2

CB VELOCITY

Rank Name State School Class Pos Velo Range
1 Colby Andrews WA Olympic High School 2026 SS 71.1-72.9 mph
2 Matthew Hansen WA Mercer Island 2026 RHP 70.5-72.5 mph
3 Greyson Arnold WA Bellevue High School 2026 RHP 70.2-71.3 mph
4 Alex Martinez WA Mount Si 2026 RHP 69.2-70.3 mph
5 Liam Gustafson WA Tumwater 2027 1B 68.5-69.5 mph

PEAK CB SPIN RATE

Rank Name State School Class Pos Spin Rate (max)
1 Liam Gustafson WA Tumwater 2027 1B 2511 rpm
2 Alex Martinez WA Mount Si 2026 RHP 2327 rpm
3 Greyson Arnold WA Bellevue High School 2026 RHP 2305 rpm
4 Colby Andrews WA Olympic High School 2026 SS 2289 rpm
5 Maddux Phimmasane WA Kamiak 2027 OF 2068 rpm

AVG CB SPIN RATE

Rank Name State School Class Pos Spin Rate (avg)
1 Liam Gustafson WA Tumwater 2027 1B 2442 rpm
2 Colby Andrews WA Olympic High School 2026 SS 2242 rpm
3 Alex Martinez WA Mount Si 2026 RHP 2190 rpm
4 Greyson Arnold WA Bellevue High School 2026 RHP 2145 rpm
5 Matthew Hansen WA Mercer Island 2026 RHP 1937 rpm

SL VELOCITY

Rank Name State School Class Pos Velo Range
1 Brayden McAllister WA Lakewood High School 2027 OF 69.8-74.2 mph
2 Cooper Thompson WA Archbishop Murphy 2028 RHP 67.0-67.3 mph
3 Wyatt West WA Liberty High School 2029 SS 61.4-64.0 mph
4 Camden Bentley WA Gig Harbor 2027 RHP 62.8-62.9 mph

PEAK SL SPIN RATE

Rank Name State School Class Pos Spin Rate (max)
1 Wyatt West WA Liberty High School 2029 SS 2028 rpm
2 Cooper Thompson WA Archbishop Murphy 2028 RHP 1787 rpm
3 Camden Bentley WA Gig Harbor 2027 RHP 1747 rpm
4 Brayden McAllister WA Lakewood High School 2027 OF 1692 rpm

AVG SL SPIN RATE

Rank Name State School Class Pos Spin Rate (avg)
1 Wyatt West WA Liberty High School 2029 SS 1891
2 Cooper Thompson WA Archbishop Murphy 2028 RHP 1759
3 Camden Bentley WA Gig Harbor 2027 RHP 1711
4 Brayden McAllister WA Lakewood High School 2027 OF 1625

CH VELOCITY

Rank Name State School Class Pos Velo Range
1 Brayden McAllister WA Lakewood High School 2027 OF 75.2-77.4 mph
2 Matthew Hansen WA Mercer Island 2026 RHP 74.1-76.1 mph
3 Greyson Arnold WA Bellevue High School 2026 RHP 73.3-75.0 mph
4 Liam Gustafson WA Tumwater 2027 1B 73.6-74.9 mph
5 Alex Martinez WA Mount Si 2026 RHP 69.3-71.8 mph

AVG CH SPIN RATE

Rank Name State School Class Pos Spin Rate (avg)
1 Cooper Thompson WA Archbishop Murphy 2028 RHP 2055 rpm
2 Alex Martinez WA Mount Si 2026 RHP 1595 rpm
3 Greyson Arnold WA Bellevue High School 2026 RHP 1501 rpm
4 Wyatt West WA Liberty High School 2029 SS 1471 rpm
5 Brayden McAllister WA Lakewood High School 2027 OF 1468 rpm

CH HORIZONTAL MOVEMENT

Rank Name State School Class Pos HM (avg)
1 Cooper Thompson WA Archbishop Murphy 2028 RHP 19.6
2 Alex Martinez WA Mount Si 2026 RHP 17.0
3 Greyson Arnold WA Bellevue High School 2026 RHP 15.6
4 Liam Gustafson WA Tumwater 2027 1B -11.3
5 Brayden McAllister WA Lakewood High School 2027 OF 10.8

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

UPCOMING EVENTS

SHOWCASE STATE DATE LOCATION
Senior Future Games (Class of 2026) NATIONAL 07/22 LakePoint Sports, Georgia
Future Games (Class of 2027) NATIONAL 07/23 LakePoint Sports, Georgia
Junior Future Games (Class of 2029/2030) NATIONAL 07/24 LakePoint Sports, Georgia
2025 Pacific Northwest State Games (Invite-Only) WA 07/29 Heritage High School - Vancouver, WA
2025 West Coast Super Sophomore Games (Invite-Only) WA 09/26 University of Oregon/Bushnell University

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