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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gabriel Reyes# | 1.05 | 2026-2027 | |
| 2 | Malulani Anakone# | 1.07 | 2025-2028 | |
| 3 | Baruc Garibay# | 1.10 | 2025-2026 | |
| 3 | José Pueblo# | 1.10 | 2026-2028 | |
| 3 | Pedro Núñez# | 1.10 | 2021-2023 | |
| 6 | Manuel Sánchez# | 1.11 | 2026-2028 | |
| 7 | Bartolo Ruíz# | 1.12 | 2024-2026 | |
| 7 | Felipe Becerra# | 1.12 | 2021-2025 | |
| 7 | Carlos Díaz# | 1.12 | 2021-2022 | |
| 10 | Edgar Lankford# | 1.14 | 2023-2024 | |
| 10 | José Fuentes# | 1.14 | 2025-2028 | |
| 10 | Kas Groen# | 1.14 | 2023-2026 | |
| 13 | Luis Arreola# | 1.15 | 2024-2027 | |
| 13 | Carlos Ortega# | 1.15 | 2022-2026 | |
| 15 | Vitorio Méndez | 1.18 | 2020-2025 | |
| 16 | Alberto Reyes# | 1.19 | 2020-2024 | |
| 16 | Xavier Padilla# | 1.19 | 2021-2024 | |
| 16 | Leoncio Ulibarri# | 1.19 | 2023-2028 | |
| 19 | Fernando Elías# | 1.20 | 2024-2028 | |
| 20 | Toshiharu Kuhabara# | 1.21 | 2025-2028 | |
| 21 | Gustavo Tobías# | 1.22 | 2026-2027 | |
| 21 | Ash Ibarra# | 1.22 | 2022-2024 | |
| 23 | Rob Ford# | 1.23 | 2026-2028 | |
| 23 | Sacco Brouwers# | 1.23 | 2022-2024 | |
| 23 | Esteban Ruíz# | 1.23 | 2021-2022 | |
| 26 | Gob Bluth# | 1.25 | 2024-2028 | |
| 26 | Will Hunting# | 1.25 | 2027-2028 | |
| 28 | David Gómez# | 1.26 | 2021-2023 | |
| 28 | Burm Snart# | 1.26 | 2025-2027 | |
| 30 | Reid Garrett# | 1.27 | 2023-2026 | |
| 31 | Luis Vega# | 1.28 | 2020-2023 | |
| 31 | Sook Sung-Man# | 1.28 | 2024-2026 | |
| 33 | Ramón Luér# | 1.29 | 2026-2028 | |
| 33 | Rubén Rodríguez# | 1.29 | 2021-2022 | |
| 35 | Yura Edel | 1.30 | 2021-2025 | |
| 36 | Horacio Pérez | 1.32 | 2020-2023 | |
| 37 | John Orton# | 1.33 | 2022-2025 | |
| 37 | Tomás Vargas# | 1.33 | 2023-2025 | |
| 39 | Jeff Greer# | 1.34 | 2026-2028 | |
| 40 | Francisco Gonsáles# | 1.36 | 2022-2024 | |
| 41 | Mike Harris# | 1.39 | 2022-2023 | |
| 41 | Ricardo Ramírez# | 1.39 | 2021-2025 | |
| 43 | Pompeyo Davalillo# | 1.41 | 2024-2025 | |
| 44 | Baker Mayfield# | 1.42 | 2025-2026 | |
| 45 | Bill Beauregard | 1.48 | 2020-2023 | |
| 46 | Dave Seals# | 1.49 | 2023-2024 | |
| 47 | Eduardo Villa | 1.50 | 2021-2025 | |
| 48 | Mario Gonzáles# | 1.52 | 2022-2024 | |
| 48 | Cheh Hao | 1.52 | 2024-2025 | |
| 50 | Jesús Otero# | 1.54 | 2023-2026 | |
| 51 | Alfredo Sánchez | 1.77 | 2020-2022 |
