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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | John Hukill* | .560 | 2008-2025 | |
| 2 | Ricky Peppers* | .528 | 2007-2021 | |
| 3 | Ramón Nieto# | .518 | 2030-2035 | |
| 4 | Rick Bryant | .491 | 2020-2029 | |
| 5 | Richard Bender | .459 | 2014-2031 | |
| 6 | Javier Chalén# | .436 | 2025-2035 | |
| 7 | Timothy Mendiola | .435 | 2012-2026 | |
| 8 | Jeff Wardlaw | .423 | 2011-2025 | |
| 9 | Martín Costa# | .422 | 2027-2035 | |
| 10 | Roy Nickerson# | .417 | 2026-2035 | |
| 11 | Fred Smith | .414 | 2009-2020 | |
| 12 | Millard Peterson# | .411 | 2030-2035 | |
| 13 | Santiago Pérez | .409 | 2020-2030 | |
| 14 | Callum Gaynon | .406 | 2017-2027 | |
| 15 | Miguel Martínez | .405 | 2021-2027 | |
| 16 | Dewey Wilson# | .395 | 2023-2035 | |
| 17 | Royal Wilson | .392 | 2011-2022 | |
| 18 | William Midkiff | .383 | 2014-2024 | |
| 19 | Pedro Rivera | .360 | 2024-2033 | |
| 20 | Dmitr Radzilowski# | .354 | 2028-2035 | |
| 21 | Jonathan Locker | .350 | 2027-2033 |
