High-A Single-Season First Base Range Factor Record Progression
Every season that raised the bar, and the leader in every season between.
The High-A single-season first base range factor record is 10.44, set by Kila Ka'aihue in 2005. It has stood for 21 years. The mark has been raised 0 times since 2005.
Record Holders
1 marks since 2005| Year | Player | 1B RF | Stood for |
|---|---|---|---|
| 2005 | Kila Ka'aihue | 10.44 | still standing |
The earliest marks here are records only in the sense that nobody had done better yet. Season length, schedule and the rules themselves have all changed, so a figure from the 1870s is not comparable with a modern one and is not offered as though it were.
Every Season
21 seasons| Year | Leader | 1B RF | |
|---|---|---|---|
| 2026 | Kyle West | 6.99 | |
| 2025 | Charlie Szykowny | 8.13 | |
| 2024 | Will Simpson | 8.04 | |
| 2023 | Rixon Wingrove | 7.49 | |
| 2022 | Dillan Shrum | 8.31 | |
| 2021 | Spencer Horwitz | 7.81 | |
| 2019 | Jameson Fisher | 8.90 | |
| 2018 | Evan White | 8.82 | |
| 2017 | Will Craig | 10.03 | |
| 2016 | Collin Ferguson | 9.80 | |
| 2015 | Edwin Espinal | 10.12 | |
| 2014 | Viosergy Rosa | 9.84 | |
| 2013 | K.C. Hobson | 9.42 | |
| 2012 | Alex Dickerson | 10.19 | |
| 2011 | Aaron Baker | 9.68 | |
| 2010 | Seth Loman | 10.17 | |
| 2009 | Matt Hague | 9.79 | |
| 2008 | Mark Trumbo | 10.42 | |
| 2007 | Micah Schnurstein | 10.08 | |
| 2006 | Michael Ferris | 10.13 | |
| 2005 | Kila Ka'aihue | 10.44 | new record |