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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ron Hill | 1.04 | 2031-2043 | |
| 2 | Alejandro Amaya | 1.08 | 2034-2042 | |
| 3 | Mark Pearson | 1.10 | 2024-2031 | |
| 3 | Jody Sutherland | 1.10 | 2032-2041 | |
| 5 | Lúcio Saldaña | 1.12 | 2033-2045 | |
| 5 | Luis Cruz | 1.12 | 2035-2043 | |
| 5 | Rusty Eager | 1.12 | 2028-2039 | |
| 5 | Darrin Cuthbert | 1.12 | 2024-2041 | |
| 9 | Jonathan Westhoff | 1.16 | 2024-2031 | |
| 10 | Rubén Oliva | 1.17 | 2033-2044 | |
| 10 | Roberto González | 1.17 | 2032-2043 | |
| 12 | Jorge Encarnación | 1.18 | 2043-2056 | |
| 13 | Art Stevens | 1.19 | 2054-2061 | |
| 13 | Gustavo Aguilar | 1.19 | 2030-2042 | |
| 13 | Ray Ratzlaff | 1.19 | 2033-2043 | |
| 13 | Silas Ryan | 1.19 | 2027-2037 | |
| 17 | Stanley Hart | 1.20 | 2028-2041 | |
| 17 | Bill Hawkins | 1.20 | 2026-2034 | |
| 17 | Roger Espinal | 1.20 | 2024-2039 | |
| 17 | Terry Abrams | 1.20 | 2027-2039 | |
| 21 | Don Tai | 1.21 | 2024-2033 | |
| 21 | Finn Veenman | 1.21 | 2029-2040 | |
| 21 | Cheng-ji Zou | 1.21 | 2034-2043 | |
| 21 | Francisco Méndez | 1.21 | 2034-2046 | |
| 25 | Erich Severt | 1.22 | 2024-2032 | |
| 25 | Luis Cabrera | 1.22 | 2040-2052 | |
| 25 | Armando Chávez | 1.22 | 2029-2044 | |
| 28 | Ángel Martínez | 1.23 | 2038-2046 | |
| 28 | Eric Mills | 1.23 | 2033-2044 | |
| 28 | Ramón Santos | 1.23 | 2040-2049 | |
| 28 | Dave Crawford | 1.23 | 2050-2061 | |
| 28 | Joe Hutchinson | 1.23 | 2026-2033 | |
| 28 | Dewitt Jones | 1.23 | 2051-2058 | |
| 34 | Manuel Cháves | 1.24 | 2033-2044 | |
| 34 | Howard Gallegos | 1.24 | 2046-2059 | |
| 34 | Pancho Cortéz | 1.24 | 2044-2055 | |
| 37 | Adelardo Torres | 1.25 | 2024-2037 | |
| 37 | Pedro Torres | 1.25 | 2029-2039 | |
| 37 | Mario Pagán | 1.25 | 2029-2040 | |
| 37 | Chris Johnston | 1.25 | 2047-2055 | |
| 37 | António Mata | 1.25 | 2033-2043 | |
| 37 | Michael Cray | 1.25 | 2024-2030 | |
| 37 | Roosevelt McWhirter | 1.25 | 2026-2035 | |
| 37 | Joong Lou# | 1.25 | 2054-2064 | |
| 37 | Roy Warren | 1.25 | 2033-2046 | |
| 46 | Darryl Smith | 1.26 | 2047-2057 | |
| 47 | José Luna# | 1.27 | 2051-2064 | |
| 47 | Juan Varaza | 1.27 | 2031-2039 | |
| 47 | Terry Williams | 1.27 | 2024-2031 | |
| 50 | Ramón Alvarado | 1.28 | 2038-2055 | |
| 50 | Pat Latham | 1.28 | 2036-2048 | |
| 50 | Gavin Austin | 1.28 | 2024-2031 | |
| 50 | Rodney Nilsson | 1.28 | 2029-2036 | |
| 50 | Andy Campbell | 1.28 | 2049-2062 | |
| 55 | Mario López | 1.29 | 2046-2055 | |
| 55 | Benjamin Rivera | 1.29 | 2024-2034 | |
| 55 | Wilfredo Nuñez | 1.29 | 2027-2035 | |
| 55 | Miguel Encarnación | 1.29 | 2035-2044 | |
| 55 | Sean Cardoza | 1.29 | 2024-2037 | |
| 55 | Mark Webb | 1.29 | 2044-2052 | |
| 55 | Raymond Larsen | 1.29 | 2024-2031 | |
| 62 | Gonzalo González | 1.30 | 2034-2047 | |
| 62 | Roberto Deleón | 1.30 | 2048-2057 | |
| 62 | Luis Torrez | 1.30 | 2051-2062 | |
| 62 | Stanley Miller | 1.30 | 2024-2031 | |
| 62 | Reid Guillotte | 1.30 | 2025-2031 | |
| 67 | James Loeffler | 1.31 | 2024-2035 | |
| 67 | Ken Brown | 1.31 | 2051-2059 | |
| 67 | Astolfo Roeffingh | 1.31 | 2029-2035 | |
| 67 | Mike Harrington | 1.31 | 2027-2036 | |
| 67 | Kevin Rix | 1.31 | 2024-2038 | |
| 67 | Boris Moffett | 1.31 | 2026-2035 | |
| 67 | Bill Alexander | 1.31 | 2036-2045 | |
| 74 | Raul Balbas | 1.32 | 2024-2029 | |
| 74 | Wesuri Shunji | 1.32 | 2025-2033 | |
| 74 | Anibal Mealha | 1.32 | 2031-2044 | |
| 77 | Grant Hamilton | 1.33 | 2051-2063 | |
| 77 | Dave Waters | 1.33 | 2043-2057 | |
| 77 | Chester Wright | 1.33 | 2046-2054 | |
| 77 | Joe Hall | 1.33 | 2047-2058 | |
| 81 | Valentín Ramírez# | 1.34 | 2049-2064 | |
| 81 | Edgar Abreu# | 1.34 | 2056-2064 | |
| 81 | Dave Coker | 1.34 | 2029-2037 | |
| 81 | Ken Herman | 1.34 | 2038-2052 | |
| 81 | Alberto Serrano | 1.34 | 2024-2032 | |
| 81 | Mathew McKinley | 1.34 | 2041-2055 | |
| 81 | Jean Gayle | 1.34 | 2025-2033 | |
| 88 | Elmer Sanders | 1.35 | 2048-2054 | |
| 88 | Vincent Caetani | 1.35 | 2030-2037 | |
| 88 | Mike Hatfield | 1.35 | 2054-2063 | |
| 88 | Matt Melton | 1.35 | 2041-2049 | |
| 92 | David Jacobson | 1.36 | 2046-2056 | |
| 92 | Arturo Dávila | 1.36 | 2028-2043 | |
| 92 | Javier Hernández | 1.36 | 2036-2045 | |
| 92 | David Croyle | 1.36 | 2024-2034 | |
| 96 | Kokushi Okubo | 1.37 | 2040-2052 | |
| 97 | Scott van Rijn | 1.38 | 2048-2057 | |
| 98 | Lorenzo Morales | 1.39 | 2032-2039 | |
| 98 | Jacques Simon | 1.39 | 2042-2055 | |
| 100 | Ray Newton | 1.40 | 2031-2042 |
