Boise Preseason ID: Pitching Data Dive
March 3, 2026
BOISE, ID – The Boise Preseason ID was held on Sunday, February 22nd at Bishop Kelly High School in Boise, ID. This showcase featured over 60 prospects from the 2026 to 2030 classes, each looking to make a statement ahead of the spring season.
Participants took part in an extended, pro-style workout that included batting practice tracked by TrackMan and Blast Motion, 60-yard dash testing powered by VALD Performance, and a full defensive evaluation. Pitchers threw bullpens, capturing advanced metrics via our TrackMan unit such as pitch velocity, spin rate, and horizontal and vertical movement. The event featured a strong mix of familiar standouts continuing to build on previous performances, along with several new names who emerged with eye-opening showings.
Below are the top Trackman Pitching metrics recorded during the bullpen sessions
FASTBALL
MAX VELOCITY
| Rank | Name | State | School | Class | Pos | Velocity (max) |
| 1 | Treagen Orr | ID | Madison | 2027 | RHP | 90.3 mph |
| 2 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 89.1 mph |
| 3 | Gus Hunter | ID | Boise | 2028 | OF | 87.1 mph |
| 4 | Jack Meimann | ID | Borah | 2027 | RHP | 86.6 mph |
| 5 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 85.6 mph |
| 6 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 85.5 mph |
| 7 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | 85.1 mph |
| 8 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 85.0 mph |
| 9 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 83.5 mph |
| 10 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | 83.5 mph |
| 11 | Colton Brink | ID | Middleton High School | 2028 | RHP | 82.8 mph |
| 12 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 81.9 mph |
| 13 | Gavin Palace | ID | Eagle | 2028 | OF | 81.8 mph |
| 14 | Grayson Slack | ID | Timberline | 2028 | RHP | 81.8 mph |
| 15 | Christian Zannitto | ID | Owyhee | 2027 | SS | 81.7 mph |
| 16 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 81.6 mph |
| 17 | Jace Hammond | ID | Sugar-Salem | 2026 | LHP | 79.7 mph |
| 18 | Tucker Helm | UT | Bear River | 2027 | RHP | 78.6 mph |
| 19 | Gio Brennan | ID | Mountain View | 2029 | OF | 78.3 mph |
| 20 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 77.6 mph |
Max Fastball Velocity: This metric calculates the speed of the pitch as it’s released from the pitcher’s hand.
HIGHEST AVG. SPIN RATE
| Rank | Name | State | School | Class | Pos | Spin Rate (avg) | Velocity (max) |
| 1 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 2334 rpm | 83.5 mph |
| 2 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | 2286 rpm | 85.1 mph |
| 3 | Grayson Slack | ID | Timberline | 2028 | RHP | 2211 rpm | 81.8 mph |
| 4 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 2157 rpm | 85.6 mph |
| 5 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 2142 rpm | 89.1 mph |
| 6 | Gus Hunter | ID | Boise | 2028 | OF | 2140 rpm | 87.1 mph |
| 7 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 2127 rpm | 81.6 mph |
| 8 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | 2125 rpm | 77.2 mph |
| 9 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 2110 rpm | 85.5 mph |
| 10 | Logan Soto | ID | Madison | 2029 | RHP | 2067 rpm | 77.1 mph |
Spin Rate: This metric calculates the rate of spin on the baseball as it leaves the pitcher’s hand, measured in revolutions per minute (rpm). Historical data shows that high-spin fastballs lessen the impact of gravity, allowing for more ‘rise’ (or less fall, in other words) as it carries through the zone. Low-spin fastballs typically indicate the pitch has greater horizontal action, often making it tougher to square up, but generally easier to make contact with, leading to more ground balls, while high-spin fastballs show a correlation with swings and misses.
HIGHEST AVG. IVB
| Rank | Name | State | School | Class | Pos | IVB (avg) | Velocity (max) |
| 1 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 24.0 in | 77.6 mph |
| 2 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 20.7 in | 85.5 mph |
| 3 | Grayson Slack | ID | Timberline | 2028 | RHP | 20.5 in | 81.8 mph |
| 4 | Luke Wilson | ID | Centennial High School | 2029 | LHP | 19.3 in | 71.9 mph |
| 5 | Gus Hunter | ID | Boise | 2028 | OF | 18.8 in | 87.1 mph |
| 6 | Gio Brennan | ID | Mountain View | 2029 | OF | 18.4 in | 78.3 mph |
| 7 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 17.9 in | 85.0 mph |
| 8 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | 17.5 in | 77.2 mph |
| 9 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 17.0 in | 81.6 mph |
| 10 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | 16.6 in | 85.1 mph |
Induced Vertical Break: Used in short form as "IVB," this metric is most important on fastballs for creating rise and on curveballs for creating depth – it can also have some use when measuring sliders, cutters, and changeups as well. Sliders tend to be closer to zero inches while cutters are generally between 5 and 15 inches. Changeups with lower IVB indicate more depth. IVB simply means the pitch is "breaking" upward or downward from the average level a pitch falls from release to home plate. This is a stat that you want to stay away from being average at. Fortunately, this can be tweaked slightly depending on release height.
HIGHEST AVG. HORIZONTAL MOVEMENT
| Rank | Name | State | School | Class | Pos | HM (avg) | Velocity (max) |
| 1 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 14.7 | 85.0 mph |
| 2 | Treagen Orr | ID | Madison | 2027 | RHP | 14.7 | 90.3 mph |
| 3 | Luke Wilson | ID | Centennial High School | 2029 | LHP | -14.3 | 71.9 mph |
| 4 | Vince Maniaci | ID | Cole Valley Christian Schools | 2028 | SS | 14.3 | 72.0 mph |
| 5 | Gio Brennan | ID | Mountain View | 2029 | OF | 14.2 | 78.3 mph |
| 6 | Cody Brown | ID | Skyline High School | 2029 | RHP | 13.7 | 74.5 mph |
| 7 | Tucker Helm | UT | Bear River | 2027 | RHP | 12.7 | 78.6 mph |
| 8 | Christian Zannitto | ID | Owyhee | 2027 | SS | 12.6 | 81.7 mph |
| 9 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 12.2 | 85.6 mph |
| 10 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | -12.2 | 81.9 mph |
Horizontal Break: Outlined on TrackMan’s own website: “... horizontal movement is measured in inches between where the pitch actually crosses the front of home plate side-wise, and where it would have crossed home plate side-wise if had it traveled in a perfectly straight line from release. A positive number means the break was to the right from the pitcher’s perspective, while a negative number means the break was to the left from the pitcher’s perspective.”
HIGHEST STRIKE ZONE RATE%
| Rank | Name | State | School | Class | Pos | Zone % |
| 1 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | 83 % |
| 2 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 72 % |
| 3 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 66 % |
For some context, in 2023 MLB pitchers averaged an In Zone% of around 49 percent in live game settings measured across all pitch types, according to Statcast.
CURVEBALL
HIGHEST AVG. SPIN RATE
| Rank | Name | State | School | Class | Pos | Spin Rate (avg) |
| 1 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 2538 rpm |
| 2 | Logan Soto | ID | Madison | 2029 | RHP | 2185 rpm |
| 3 | Christian Zannitto | ID | Owyhee | 2027 | SS | 2097 rpm |
| 4 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 2097 rpm |
| 5 | Jack Meimann | ID | Borah | 2027 | RHP | 2064 rpm |
| 6 | Jaden Evers | ID | Rocky Mountain | 2028 | OF | 1989 rpm |
| 7 | Luke Wilson | ID | Centennial High School | 2029 | LHP | 1927 rpm |
| 8 | Tucker Helm | UT | Bear River | 2027 | RHP | 1922 rpm |
| 9 | Treagen Orr | ID | Madison | 2027 | RHP | 1856 rpm |
| 10 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | 1828 rpm |
HIGHEST AVG. IVB
| Rank | Name | State | School | Class | Pos | IVB (avg) |
| 1 | Christian Zannitto | ID | Owyhee | 2027 | SS | -10.9 in |
| 2 | Treagen Orr | ID | Madison | 2027 | RHP | -9.3 in |
| 3 | Kellen Viehweg | ID | Middleton | 2027 | RHP | -9.2 in |
| 4 | Carson Williams | ID | Middleton | 2027 | LHP | -6.7 in |
| 5 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | -5.3 in |
| 6 | Colton Brink | ID | Middleton High School | 2028 | RHP | -5.3 in |
| 7 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | -4.4 in |
| 8 | Cody Brown | ID | Skyline High School | 2029 | RHP | 4.3 in |
| 9 | Luke Wilson | ID | Centennial High School | 2029 | LHP | -3.5 in |
| 10 | Tucker Helm | UT | Bear River | 2027 | RHP | 3.4 in |
HIGHEST AVG. HORIZONTAL MOVEMENT
| Rank | Name | State | School | Class | Pos | HM (avg) |
| 1 | Christian Zannitto | ID | Owyhee | 2027 | SS | -14.6 |
| 2 | Treagen Orr | ID | Madison | 2027 | RHP | -13.0 |
| 3 | Luke Wilson | ID | Centennial High School | 2029 | LHP | 11.9 |
| 4 | Carson Williams | ID | Middleton | 2027 | LHP | 10.0 |
| 5 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | -8.4 |
| 6 | Kellen Viehweg | ID | Middleton | 2027 | RHP | -8.0 |
| 7 | Colton Brink | ID | Middleton High School | 2028 | RHP | -7.1 |
| 8 | Jack Meimann | ID | Borah | 2027 | RHP | -6.8 |
| 9 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | -6.5 |
| 10 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | -6.3 |
HIGHEST STRIKE ZONE RATE%
| Rank | Name | State | School | Class | Pos | Zone % |
| 1 | Gio Brennan | ID | Mountain View | 2029 | OF | 66 % |
| 2 | Jack Meimann | ID | Borah | 2027 | RHP | 60 % |
| ^ | Kellen Viehweg | ID | Middleton | 2027 | RHP | 60 % |
| 3 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 50 % |
| ^ | Jace Hammond | ID | Sugar-Salem | 2026 | LHP | 50 % |
| ^ | Treagen Orr | ID | Madison | 2027 | RHP | 50 % |
SLIDER
HIGHEST AVG. SPIN RATE
| Rank | Name | State | School | Class | Pos | Spin Rate (avg) |
| 1 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 2605 |
| 2 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 2247 |
| 3 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 2210 |
| 4 | Christian Zannitto | ID | Owyhee | 2027 | SS | 2197 |
| 5 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 2188 |
| 6 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 2146 |
| 7 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | 2059 |
| 8 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 2054 |
| 9 | Treagen Orr | ID | Madison | 2027 | RHP | 2048 |
| 10 | Grayson Slack | ID | Timberline | 2028 | RHP | 2026 |
HIGHEST AVG. IVB
| Rank | Name | State | School | Class | Pos | IVB (avg) |
| 1 | Carson Williams | ID | Middleton | 2027 | LHP | -10.6 in |
| 2 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | -9.9 in |
| 3 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | 9.6 in |
| 4 | Gavin Palace | ID | Eagle | 2028 | OF | -7.4 in |
| 5 | Luke Wilson | ID | Centennial High School | 2029 | LHP | -6.7 in |
| 6 | Grayson Slack | ID | Timberline | 2028 | RHP | -6.1 in |
| 7 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 6.1 in |
| 8 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 5.3 in |
| 9 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | -4.3 in |
| 10 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 2.6 in |
HIGHEST AVG. HORIZONTAL MOVEMENT
| Rank | Name | State | School | Class | Pos | HM (avg) |
| 1 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | -16.6 |
| 2 | Chase Casagrande | ID | Bishop Kelly | 2028 | 1B | -12.7 |
| 3 | Christian Zannitto | ID | Owyhee | 2027 | SS | -12.5 |
| 4 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | -12.4 |
| 5 | Luke Wilson | ID | Centennial High School | 2029 | LHP | 12.2 |
| 6 | Treagen Orr | ID | Madison | 2027 | RHP | -11.7 |
| 7 | Grayson Slack | ID | Timberline | 2028 | RHP | -11.2 |
| 8 | Brevik Birch | ID | Owyhee | 2030 | 2B | -10.8 |
| 9 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 9.1 |
| 10 | Jaiden Schranz | ID | Middleton | 2029 | RHP | -9.0 |
HIGHEST STRIKE ZONE RATE%
| Rank | Name | State | School | Class | Pos | Zone % |
| 1 | Christian Zannitto | ID | Owyhee | 2027 | SS | 75 % |
| ^ | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 75 % |
| 2 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 66 % |
| 3 | Kellen Viehweg | ID | Middleton | 2027 | RHP | 60 % |
CHANGEUP
AVG CHANGEUP SPIN RATE (RPM)
| Rank | Name | State | School | Class | Pos | Spin Rate (avg) | HM (avg) |
| 1 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 2119 rpm | 17.1 |
| 2 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 2060 rpm | 6.4 |
| 3 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 2060 rpm | -19.9 |
| 4 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 1875 rpm | 16.0 |
| 5 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | 1813 rpm | 10.7 |
| 6 | Jace Hammond | ID | Sugar-Salem | 2026 | LHP | 1705 rpm | -15.5 |
| 7 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | 1630 rpm | 9.8 |
| 8 | Carson Williams | ID | Middleton | 2027 | LHP | 1627 rpm | 3.3 |
| 9 | Hayden Nahay | ID | Skyline Senior High School | 2027 | 3B | 1589 rpm | 4.2 |
| 10 | Treagen Orr | ID | Madison | 2027 | RHP | 1588 rpm | 19.3 |
AVG. IVB
| Rank | Name | State | School | Class | Pos | IVB (avg) | HM (avg) |
| 1 | Trevor Schmidt | ID | Mountain Home SR High School | 2028 | RHP | 16.6 in | 9.8 |
| 2 | Oliver Jacobs | ID | Cole Valley Christian Schools | 2030 | 1B | 15.9 in | 10.7 |
| 3 | Luke Wilson | ID | Centennial High School | 2029 | LHP | 14.7 in | -10.8 |
| 4 | Jaden Evers | ID | Rocky Mountain | 2028 | OF | 14.6 in | -7.7 |
| 5 | Gio Brennan | ID | Mountain View | 2029 | OF | 13.0 in | 11.0 |
| 6 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 12.0 in | 12.4 |
| 7 | Tucker Helm | UT | Bear River | 2027 | RHP | 10.9 in | 14.7 |
| 8 | Cody Brown | ID | Skyline High School | 2029 | RHP | 10.3 in | 5.5 |
| 9 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 10.0 in | -19.9 |
| 10 | Colton Brink | ID | Middleton High School | 2028 | RHP | 9.5 in | -2.0 |
HIGHEST AVG. HORIZONTAL MOVEMENT
| Rank | Name | State | School | Class | Pos | HM (avg) | IVB (avg) |
| 1 | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | -19.9 | 10.0 in |
| 2 | Treagen Orr | ID | Madison | 2027 | RHP | 19.3 | 6.0 in |
| 3 | Kai Benfield | ID | Sugar-Salem | 2027 | OF | 17.1 | 9.2 in |
| 4 | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 16.0 | 5.8 in |
| 5 | Jace Hammond | ID | Sugar-Salem | 2026 | LHP | -15.5 | 7.9 in |
| 6 | Tucker Helm | UT | Bear River | 2027 | RHP | 14.7 | 10.9 in |
| 7 | Jack Meimann | ID | Borah | 2027 | RHP | 14.3 | 7.6 in |
| 8 | Easton Pierce | ID | Mountain View High School | 2028 | 3B | 13.9 | 7.7 in |
| 9 | Gus Hunter | ID | Boise | 2028 | OF | 12.6 | 8.5 in |
| 10 | Jaiden Schranz | ID | Middleton | 2029 | RHP | 12.4 | 12.0 in |
HIGHEST STRIKE ZONE RATE%
| Rank | Name | State | School | Class | Pos | Zone % | Velocity (max) |
| 1 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 100 % | 71.5 mph |
| ^ | Kellen Viehweg | ID | Middleton | 2027 | RHP | 100 % | 80.2 mph |
| ^ | Ayden Boyd | ID | Bishop Kelly | 2026 | OF | 100 % | 76.7 mph |
| 2 | Gavin Palace | ID | Eagle | 2028 | OF | 50 % | 72.5 mph |
| ^ | Deegan Gonzalez | ID | Mountain View | 2027 | OF | 50 % | 73.8 mph |
| 3 | Jaden Evers | ID | Rocky Mountain | 2028 | OF | 33 % | 69.4 mph |
| ^ | Gio Brennan | ID | Mountain View | 2029 | OF | 33 % | 66.7 mph |
| ^ | Jaiden Schranz | ID | Middleton | 2029 | RHP | 33 % | 73.3 mph |
SPLITTER
AVG SPIN RATE (RPM)
| Rank | Name | State | School | Class | Pos | Spin Rate (avg) |
| 1 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 1538 rpm |
| 2 | Grayson Slack | ID | Timberline | 2028 | RHP | 1431 rpm |
| 3 | Christian Zannitto | ID | Owyhee | 2027 | SS | 1059 rpm |
AVG. IVB
| Rank | Name | State | School | Class | Pos | IVB (avg) |
| 1 | Grayson Slack | ID | Timberline | 2028 | RHP | 18.7 in |
| 2 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | 9.3 in |
| 3 | Christian Zannitto | ID | Owyhee | 2027 | SS | 5.1 in |
HIGHEST AVG. HORIZONTAL MOVEMENT
| Rank | Name | State | School | Class | Pos | HM (avg) |
| 1 | Andre Weathers | ID | Rocky Mountain | 2028 | LHP | -11.4 |
| 2 | Grayson Slack | ID | Timberline | 2028 | RHP | 9.7 |
| 3 | Christian Zannitto | ID | Owyhee | 2027 | SS | 7.8 |
HIGHEST STRIKE ZONE RATE%
| Rank | Name | State | School | Class | Pos | Zone % |
| 1 | Grayson Slack | ID | Timberline | 2028 | RHP | 66 % |