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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ramón Cruz | 0.930 | 2011 | |
| 2 | Jesús Jaramillo | 0.974 | 2013 | |
| 3 | Ramón Cruz | 0.995 | 2010 | |
| 4 | Santiago González | 1.030 | 2026 | |
| 5 | António Gálvez | 1.031 | 2014 | |
| 6 | Cordell Hensley | 1.049 | 2012 | |
| 7 | Irving Baker | 1.057 | 2013 | |
| 8 | David Evans | 1.062 | 2011 | |
| 9 | Ramón Quintero | 1.070 | 2025 | |
| 10 | Davey Huckaby | 1.082 | 2013 | |
| 11 | Lorenzo Aguilar# | 1.101 | 2024 | |
| 12 | Irving Baker | 1.103 | 2014 | |
| 13 | Nathan Seymour | 1.106 | 2024 | |
| 14 | Javier González | 1.107 | 2027 | |
| 15 | Nathan Seymour | 1.114 | 2021 | |
| 16 | Duane Deal# | 1.115 | 2030 | |
| 17 | Katsuhiko Takaki | 1.117 | 2011 | |
| 18 | Ju-yi Gu | 1.132 | 2010 | |
| 19 | António Gálvez | 1.137 | 2013 | |
| 20 | Javier González | 1.138 | 2025 | |
| 21 | Rob King | 1.142 | 2012 | |
| 21 | Román Zamora# | 1.142 | 2036 | |
| 23 | Nathan Seymour | 1.148 | 2026 | |
| 24 | Armando Rodríguez | 1.152 | 2026 | |
| 24 | Luis Franco | 1.152 | 2008 | |
| 26 | Mario Peńa | 1.153 | 2013 | |
| 27 | Nathan Seymour | 1.156 | 2025 | |
| 28 | Won-sup Yi | 1.162 | 2014 | |
| 29 | Pedro Mendoza | 1.164 | 2026 | |
| 30 | Lorenzo López | 1.166 | 2017 | |
| 30 | Ángel Rodríguez | 1.166 | 2012 | |
| 32 | Tim Sullivan | 1.169 | 2011 | |
| 33 | Ramón Méndez | 1.170 | 2010 | |
| 34 | Don Wiggins | 1.179 | 2024 | |
| 35 | Dave Lewis | 1.187 | 2010 | |
| 35 | John Stewart | 1.187 | 2010 | |
| 37 | Erwin Entwistle | 1.192 | 2026 | |
| 38 | Júlio Quintana | 1.195 | 2010 | |
| 39 | Cristóbal Santos | 1.204 | 2016 | |
| 39 | Walt Thompson | 1.204 | 2013 | |
| 39 | Ramón Quintero | 1.204 | 2026 | |
| 42 | Gildun Ouakili | 1.205 | 2019 | |
| 43 | Kian Mac | 1.207 | 2007 | |
| 44 | Santiago González | 1.210 | 2019 | |
| 44 | Luis Franco | 1.210 | 2010 | |
| 46 | Yin-zhen Zhan | 1.216 | 2008 | |
| 46 | Ed Turner | 1.216 | 2011 | |
| 48 | Santiago González | 1.220 | 2020 | |
| 49 | Jorge Ruíz | 1.226 | 2023 | |
| 50 | Jim Wither# | 1.227 | 2035 | |
| 51 | Luis Féliz | 1.239 | 2023 | |
| 52 | Javier González | 1.240 | 2026 | |
| 53 | Robbie Daniel | 1.241 | 2022 | |
| 54 | Esteban Aragón# | 1.242 | 2037 | |
| 55 | Tim Sullivan | 1.243 | 2010 | |
| 56 | Armando Rodríguez | 1.248 | 2027 | |
| 57 | Javier Rodríguez# | 1.249 | 2037 | |
| 58 | Rob Hill | 1.250 | 2024 | |
| 58 | Carlos Ruíz | 1.250 | 2019 | |
| 60 | Lane Lund | 1.251 | 2029 | |
| 61 | Marcos Urbina | 1.255 | 2014 | |
| 62 | Hokusai Nakashima | 1.260 | 2018 | |
| 63 | Gary Cox | 1.261 | 2012 | |
| 64 | Rod Day | 1.263 | 2026 | |
| 65 | Fred Bennett | 1.267 | 2012 | |
| 66 | Nathan Seymour | 1.268 | 2022 | |
| 67 | Sandro Gonzáles | 1.269 | 2015 | |
| 67 | Juan Aguilar | 1.269 | 2019 | |
| 69 | Román Zamora# | 1.270 | 2037 | |
| 70 | Davis Morgan# | 1.273 | 2034 | |
| 70 | Bart Hughes# | 1.273 | 2036 | |
| 72 | Brian Grant | 1.284 | 2019 | |
| 73 | Jesús Costello# | 1.286 | 2033 | |
| 74 | Cordell Hensley | 1.287 | 2017 | |
| 75 | Charles Walters# | 1.291 | 2037 | |
| 76 | Tom Land# | 1.292 | 2033 | |
| 76 | Albert Wallace | 1.292 | 2015 | |
| 78 | José Reyes | 1.293 | 2008 | |
| 79 | Jerry Paige | 1.296 | 2011 | |
| 80 | Willie Lara | 1.298 | 2007 | |
| 81 | Steve Floyd | 1.299 | 2025 | |
| 82 | Santiago González | 1.300 | 2018 | |
| 82 | Tom Land# | 1.300 | 2034 | |
| 84 | Darren Blackwell | 1.302 | 2024 | |
| 85 | Raymond Gregg | 1.308 | 2026 | |
| 86 | Mario Peńa | 1.309 | 2012 | |
| 86 | Miguel Meneces# | 1.309 | 2030 | |
| 88 | Mang Tow | 1.310 | 2015 | |
| 89 | Ángel Rodríguez | 1.312 | 2031 | |
| 89 | Dwight Livingston# | 1.312 | 2026 | |
| 91 | Raúl Vélez# | 1.313 | 2037 | |
| 92 | Rusty van Rhee | 1.314 | 2029 | |
| 93 | Clarence Skerratt | 1.318 | 2024 | |
| 93 | Kiyoshi Yamaguchi | 1.318 | 2010 | |
| 93 | Hokusai Nakashima | 1.318 | 2019 | |
| 96 | Rob Price | 1.322 | 2015 | |
| 97 | Mike Waddingham# | 1.323 | 2038 | |
| 98 | Tom Miller | 1.326 | 2023 | |
| 99 | Mal Windham | 1.329 | 2010 | |
| 100 | Armand Calazzo | 1.330 | 2023 |
