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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Lou Callahan | 0.92 | 2026 | |
| 2 | Derek Casey | 1.00 | 2027 | |
| 3 | Wilson Requena | 1.02 | 2022 | |
| 4 | Micah Miniard | 1.03 | 2023 | |
| 4 | Augusto Rodríguez# | 1.03 | 2021 | |
| 6 | Jake Smith | 1.04 | 2020 | |
| 7 | César Mercado# | 1.05 | 2025 | |
| 8 | Lucas Sims | 1.06 | 2015 | |
| 9 | Ken Gómez | 1.07 | 2019 | |
| 9 | Turner Larkins | 1.07 | 2018 | |
| 11 | Augusto Rodríguez# | 1.08 | 2022 | |
| 12 | Steve Castle# | 1.10 | 2028 | |
| 12 | César Pérez# | 1.10 | 2022 | |
| 12 | Sean Gordon | 1.10 | 2024 | |
| 15 | Felix Sterling | 1.12 | 2022 | |
| 15 | Mario Paredes# | 1.12 | 2026 | |
| 15 | Keith Weisenberg | 1.12 | 2019 | |
| 15 | Ariel Pena | 1.12 | 2023 | |
| 15 | Joe Perkins# | 1.12 | 2029 | |
| 15 | Ricardo Sanchez# | 1.12 | 2017 | |
| 21 | Beau Rose | 1.13 | 2026 | |
| 21 | Logan Shore# | 1.13 | 2019 | |
| 21 | Jose Morel | 1.13 | 2018 | |
| 21 | Jen-Ho Tseng | 1.13 | 2017 | |
| 21 | Alejandro Viloria | 1.13 | 2023 | |
| 26 | Alvin McGee | 1.14 | 2021 | |
| 26 | Tim Reed | 1.14 | 2027 | |
| 26 | Alejandro Viloria | 1.14 | 2024 | |
| 29 | Jake Cosart | 1.15 | 2019 | |
| 29 | Thaddius Lowry | 1.15 | 2019 | |
| 29 | Rod Shannon | 1.15 | 2026 | |
| 29 | Juan Villalobos# | 1.15 | 2029 | |
| 33 | Divino Gamarra# | 1.16 | 2029 | |
| 33 | Nik Turley | 1.16 | 2017 | |
| 33 | Robbie Wagner | 1.16 | 2022 | |
| 36 | Justin Sinibaldi | 1.17 | 2020 | |
| 36 | Norberto Ramírez# | 1.17 | 2024 | |
| 38 | Jamie Callahan | 1.18 | 2017 | |
| 38 | Anderson Espinoza# | 1.18 | 2018 | |
| 38 | Joel Conner | 1.18 | 2022 | |
| 38 | R.J. Reed# | 1.18 | 2019 | |
| 42 | Jake Cose | 1.19 | 2022 | |
| 42 | Tomás Romero# | 1.19 | 2024 | |
| 42 | Trey Wingenter | 1.19 | 2017 | |
| 42 | Oliver Asencio | 1.19 | 2026 | |
| 42 | Justin Sinibaldi | 1.19 | 2021 | |
| 42 | Miguel Angel Chárvez | 1.19 | 2024 | |
| 48 | Mauricio Cabrera | 1.20 | 2015 | |
| 49 | Phil Brooks# | 1.21 | 2024 | |
| 49 | Kyle Kemp | 1.21 | 2018 | |
| 49 | Ken Escamilla# | 1.21 | 2022 | |
| 49 | Moises Ramirez | 1.21 | 2020 | |
| 49 | Luis Orozco# | 1.21 | 2025 | |
| 49 | Wes Parsons | 1.21 | 2015 | |
| 49 | Ben Douglas | 1.21 | 2023 | |
| 56 | Bob Erwin | 1.22 | 2023 | |
| 56 | Ben Douglas | 1.22 | 2024 | |
| 56 | Cam Tekker | 1.22 | 2018 | |
| 56 | Lucas Sims | 1.22 | 2016 | |
| 60 | Casey Shane | 1.23 | 2015 | |
| 61 | Rob Woods# | 1.24 | 2029 | |
| 61 | Jose M. Martinez | 1.24 | 2020 | |
| 61 | Juan Canseco | 1.24 | 2026 | |
| 64 | Moises Ramirez | 1.25 | 2019 | |
| 64 | José Vázquez# | 1.25 | 2025 | |
| 64 | Lucas Sims | 1.25 | 2017 | |
| 64 | Luis Ortíz# | 1.25 | 2027 | |
| 64 | Yunior Marte | 1.25 | 2019 | |
| 69 | Juan Perales | 1.26 | 2024 | |
| 69 | Sergio Gomez | 1.26 | 2018 | |
| 69 | Victor Garcia | 1.26 | 2017 | |
| 69 | Razvan Sandor | 1.26 | 2020 | |
| 73 | Jeremiah Muhammad | 1.27 | 2023 | |
| 73 | Ty Buttrey | 1.27 | 2018 | |
| 75 | Kevin Ramsey# | 1.28 | 2028 | |
| 75 | Keith Weisenberg | 1.28 | 2018 | |
| 77 | José Salazar# | 1.29 | 2026 | |
| 77 | R.J. Reed# | 1.29 | 2020 | |
| 77 | Ben Wetzler | 1.29 | 2016 | |
| 80 | Joe Carnes# | 1.30 | 2029 | |
| 80 | Jen-Ho Tseng | 1.30 | 2016 | |
| 80 | Dillon Maples | 1.30 | 2016 | |
| 83 | Trevor Clifton | 1.31 | 2019 | |
| 83 | Justin Haley | 1.31 | 2015 | |
| 83 | Dace Kime | 1.31 | 2015 | |
| 83 | Justin Haley | 1.31 | 2017 | |
| 83 | António Díaz# | 1.31 | 2028 | |
| 83 | Tyrell Jenkins | 1.31 | 2015 | |
| 83 | Héctor Peña# | 1.31 | 2026 | |
| 83 | Dave Robinson# | 1.31 | 2027 | |
| 91 | Jorge Lucero# | 1.32 | 2026 | |
| 91 | Jorge Marrero | 1.32 | 2026 | |
| 91 | José De Los Santos# | 1.32 | 2027 | |
| 91 | Josh Sborz | 1.32 | 2020 | |
| 95 | Ashton Perritt | 1.33 | 2019 | |
| 95 | António López# | 1.33 | 2026 | |
| 95 | Norberto Luna | 1.33 | 2021 | |
| 98 | Steve Simpson | 1.34 | 2022 | |
| 98 | Rubén Ornelas# | 1.34 | 2029 | |
| 98 | Jamie Callahan | 1.34 | 2015 |
