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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ramón Costello | 1.007 | 2013 | |
| 2 | Daniel Díaz | 1.008 | 2013 | |
| 3 | Enrique Baldivía | 1.025 | 2026 | |
| 4 | Elvis Callahan | 1.059 | 2014 | |
| 5 | Sam Hatt | 1.064 | 2022 | |
| 6 | Carl O'Quinn | 1.077 | 2015 | |
| 7 | Roberto Gonzáles | 1.081 | 2027 | |
| 8 | Hidemichi Kikuchi | 1.108 | 2022 | |
| 9 | Tommy Bartlett | 1.111 | 2030 | |
| 10 | Randy Owry# | 1.116 | 2030 | |
| 10 | Gregg Emerson | 1.116 | 2025 | |
| 12 | Paul Simpson | 1.119 | 2026 | |
| 12 | Gilberto Pérez | 1.119 | 2027 | |
| 14 | Kuniyoshi Nishiyama# | 1.124 | 2031 | |
| 15 | Sancho Ortega | 1.127 | 2024 | |
| 16 | Máximo Cucalón | 1.132 | 2017 | |
| 17 | Cliff Clark | 1.136 | 2012 | |
| 18 | David Bryan | 1.140 | 2019 | |
| 18 | Jorge Mota# | 1.140 | 2027 | |
| 18 | Masamichi Takeda# | 1.140 | 2030 | |
| 21 | Takeji Ogawa# | 1.142 | 2025 | |
| 22 | Héctor González# | 1.143 | 2032 | |
| 23 | Román Alonzo | 1.144 | 2025 | |
| 24 | Calvin Townend | 1.148 | 2014 | |
| 25 | Keith Rogers | 1.152 | 2024 | |
| 26 | Pedro Díaz | 1.153 | 2019 | |
| 27 | John Martin | 1.156 | 2012 | |
| 28 | Le-song Kao# | 1.160 | 2025 | |
| 29 | Felipe Rodríguez# | 1.162 | 2026 | |
| 30 | Jimmy Hunter# | 1.165 | 2032 | |
| 31 | Jeffery Francis | 1.166 | 2015 | |
| 31 | Hidemichi Kikuchi | 1.166 | 2021 | |
| 33 | Scott Wade | 1.167 | 2013 | |
| 34 | Chris Terry | 1.168 | 2014 | |
| 35 | Dao-zi Chou# | 1.169 | 2030 | |
| 35 | Matis Barrier# | 1.169 | 2028 | |
| 37 | Héctor González# | 1.179 | 2031 | |
| 38 | Dave Nance | 1.187 | 2018 | |
| 39 | Masayoshi Tanaka# | 1.188 | 2029 | |
| 40 | Kulapati Pandian# | 1.190 | 2021 | |
| 41 | Kirk Snyder | 1.191 | 2015 | |
| 42 | Júlio Herrera# | 1.196 | 2030 | |
| 43 | Jose Albertrani# | 1.202 | 2025 | |
| 43 | Matsuyo Koda# | 1.202 | 2030 | |
| 45 | Arturo Vega | 1.205 | 2025 | |
| 46 | Lloyd Huggins# | 1.207 | 2031 | |
| 47 | Saiyid Mashwanis# | 1.213 | 2027 | |
| 47 | Daniel Díaz | 1.213 | 2012 | |
| 49 | Dave Munier# | 1.217 | 2032 | |
| 50 | Kichibei Ozawa | 1.221 | 2025 | |
| 50 | Yoritomo Ine | 1.221 | 2018 | |
| 52 | Phil Phillips# | 1.222 | 2028 | |
| 53 | Pedro Díaz | 1.223 | 2020 | |
| 53 | Benny Hartley# | 1.223 | 2023 | |
| 55 | Ron Hodges | 1.224 | 2012 | |
| 56 | Luis Vásquez# | 1.226 | 2032 | |
| 56 | John Deschamps# | 1.226 | 2026 | |
| 58 | Kuniyoshi Hasegawa | 1.228 | 2019 | |
| 58 | Pedro Díaz | 1.228 | 2021 | |
| 60 | Théophile Richard# | 1.229 | 2031 | |
| 61 | Leonard Veeck | 1.233 | 2016 | |
| 61 | Hidemichi Kikuchi | 1.233 | 2020 | |
| 63 | Finlay Coinneach | 1.234 | 2024 | |
| 64 | Diogo Negreiros | 1.242 | 2015 | |
| 65 | Luis López | 1.246 | 2012 | |
| 65 | Barrett Lamb# | 1.246 | 2033 | |
| 67 | Wing-chiu Zhou# | 1.251 | 2023 | |
| 67 | Cachari Suketu# | 1.251 | 2025 | |
| 69 | Bi`nh Trieu# | 1.252 | 2027 | |
| 69 | Koi-sho An# | 1.252 | 2025 | |
| 69 | Baltwin Baars# | 1.252 | 2024 | |
| 69 | Julian Fanner# | 1.252 | 2028 | |
| 73 | Gonzalo Ramírez# | 1.257 | 2025 | |
| 74 | Chuk-yan Chio | 1.260 | 2028 | |
| 75 | Ramón Gómez# | 1.261 | 2026 | |
| 75 | Jorge Matos | 1.261 | 2014 | |
| 77 | Lorenzo Ramírez | 1.263 | 2025 | |
| 78 | Pedre Pedrogo# | 1.264 | 2030 | |
| 79 | Adharma Sughavanam# | 1.267 | 2028 | |
| 80 | Song Wa# | 1.269 | 2022 | |
| 81 | Clay Melsom# | 1.270 | 2030 | |
| 82 | Chuk-yan Chio | 1.271 | 2027 | |
| 83 | Elmer Turner# | 1.272 | 2027 | |
| 83 | Robinson Pedercini# | 1.272 | 2021 | |
| 85 | Na'il bin Bashshar# | 1.273 | 2022 | |
| 86 | Shoichi Ikeda# | 1.274 | 2030 | |
| 86 | Dongdo-pa Chen# | 1.274 | 2030 | |
| 86 | Gerald Major | 1.274 | 2021 | |
| 89 | Jim Hall | 1.277 | 2017 | |
| 90 | Odoardo Bairros | 1.279 | 2017 | |
| 91 | Dominic Smith# | 1.280 | 2032 | |
| 92 | Alexis Garrett# | 1.281 | 2026 | |
| 93 | Paul Woodrow# | 1.286 | 2025 | |
| 93 | Donkal Ubriani# | 1.286 | 2021 | |
| 95 | Andy Green | 1.289 | 2015 | |
| 96 | Emerson Webber | 1.293 | 2017 | |
| 96 | Carl Clay | 1.293 | 2018 | |
| 98 | Sancho Ortega | 1.296 | 2023 | |
| 99 | Koichi Takahashi | 1.297 | 2029 | |
| 99 | Bill Russell | 1.297 | 2014 |
