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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Alfredo Benavides | 1.181 | 1971-1980 | |
| 2 | José Vásquez | 1.184 | 1996-2003 | |
| 3 | Juan Rivera | 1.190 | 1970-1974 | |
| 4 | Aaron Lyon | 1.201 | 2007-2015 | |
| 5 | Felipe Brito | 1.216 | 2001-2012 | |
| 6 | César López | 1.217 | 1979-1983 | |
| 7 | Ramón Gutiérrez | 1.229 | 2000-2009 | |
| 8 | Dale Marsh | 1.230 | 2003-2014 | |
| 9 | Sean Russell | 1.232 | 2007-2013 | |
| 10 | Pedro García | 1.253 | 1970-1976 | |
| 11 | David Oglethorpe | 1.256 | 1980-1990 | |
| 12 | Curt Kelly | 1.259 | 1976-1981 | |
| 13 | Alonso Barrera | 1.273 | 1970-1979 | |
| 13 | Silas Phipps | 1.273 | 1981-1990 | |
| 15 | Aaron Nelson | 1.286 | 1995-2001 | |
| 16 | Dan Tate | 1.292 | 1973-1979 | |
| 17 | William Parsons | 1.296 | 1973-1980 | |
| 17 | Adam Fowler | 1.296 | 1995-2000 | |
| 19 | Augusto Rodríguez | 1.297 | 1977-1983 | |
| 20 | Mauro Rodríguez | 1.302 | 1992-2004 | |
| 21 | Pete Davis | 1.308 | 1970-1976 | |
| 22 | Ángel Amaya# | 1.310 | 2016-2023 | |
| 23 | Gilbert Palmer | 1.312 | 2010-2015 | |
| 24 | Juan Jose Navarro | 1.313 | 1970-1975 | |
| 25 | Buddy Morgan | 1.319 | 2001-2009 | |
| 25 | Trevor Roberts | 1.319 | 1970-1974 | |
| 27 | Darby Knox | 1.321 | 1971-1981 | |
| 27 | James Goff | 1.321 | 1975-1982 | |
| 29 | Luke Wallace | 1.323 | 2012-2018 | |
| 30 | Jesús Reyes | 1.324 | 2005-2015 | |
| 30 | Eric Callwood | 1.324 | 2005-2019 | |
| 32 | Jorge Morales | 1.325 | 1991-1999 | |
| 32 | Dave Richter | 1.325 | 1978-1984 | |
| 34 | John Davidson | 1.331 | 2008-2016 | |
| 35 | Zach Henry | 1.332 | 2007-2019 | |
| 35 | Mike Hood | 1.332 | 1970-1980 | |
| 37 | Toshinobu Ohayashi | 1.334 | 2001-2015 | |
| 37 | Virgil Tucker | 1.334 | 2011-2017 | |
| 37 | Alfredo Rodríguez | 1.334 | 1977-1993 | |
| 40 | Doug Smith | 1.337 | 1992-1997 | |
| 41 | Edwin Wills | 1.338 | 1970-1976 | |
| 41 | Juan Gonzáles | 1.338 | 2010-2016 | |
| 43 | Alejandro González | 1.339 | 2002-2010 | |
| 44 | Craig Mullen | 1.348 | 1997-2003 | |
| 45 | Ed Brunskill | 1.350 | 2014-2020 | |
| 46 | Jacob Gross | 1.351 | 1973-1978 | |
| 46 | George Glendenning | 1.351 | 1991-1996 | |
| 48 | Luis Villegas | 1.355 | 2011-2021 | |
| 49 | Clarence Gross | 1.356 | 1972-1976 | |
| 50 | Jeffrey Frank | 1.358 | 1971-1976 | |
| 51 | Enrique Díaz | 1.363 | 2011-2017 | |
| 52 | Wilson Fernández | 1.366 | 1970-1978 | |
| 53 | Ollie Shirley | 1.368 | 1970-1976 | |
| 54 | Jason Watson | 1.369 | 2014-2021 | |
| 55 | James Wilson | 1.371 | 1996-2002 | |
| 56 | Chris Flanagan | 1.374 | 2015-2020 | |
| 56 | Josh Valentine | 1.374 | 1983-1988 | |
| 58 | Luis Marín | 1.376 | 1998-2003 | |
| 59 | Brendan Farris | 1.377 | 1972-1976 | |
| 60 | Cristián Castillo | 1.380 | 1971-1982 | |
| 61 | Jesús Esparza | 1.381 | 2007-2013 | |
| 62 | Félix Pineda | 1.384 | 2004-2014 | |
| 62 | Frank Gordon | 1.384 | 1985-1998 | |
| 64 | David Angle | 1.388 | 1970-1973 | |
| 64 | Mike Reilly | 1.388 | 2012-2019 | |
| 64 | Miguel Germán# | 1.388 | 2006-2022 | |
| 67 | Chris Edwards | 1.389 | 2009-2014 | |
| 68 | Armando Rosa | 1.401 | 1978-1987 | |
| 69 | Adam Peterson | 1.402 | 2004-2011 | |
| 69 | Mike James | 1.402 | 2012-2018 | |
| 71 | Bobby Morrison | 1.404 | 2005-2014 | |
| 72 | Kan-goo Kim | 1.405 | 2007-2015 | |
| 73 | Héctor Chávez | 1.406 | 1979-1985 | |
| 74 | Bill Connor | 1.409 | 1999-2008 | |
| 75 | Nathan Clark | 1.410 | 1991-1998 | |
| 75 | Juan Montés | 1.410 | 1986-1992 | |
| 75 | William Hickman | 1.410 | 1996-2003 | |
| 75 | Bubba Lynn | 1.410 | 1970-1983 | |
| 79 | Pete Hoskins | 1.413 | 1979-1984 | |
| 80 | Ben Cunningham# | 1.414 | 2012-2022 | |
| 81 | Jim Martin | 1.415 | 1995-1999 | |
| 82 | Tim Moore | 1.416 | 1994-1999 | |
| 83 | Lindsay Armstrong | 1.418 | 2001-2009 | |
| 84 | Curt Jones | 1.419 | 1984-1991 | |
| 85 | Bill Norton | 1.420 | 1984-1989 | |
| 86 | Jimmy Robertson | 1.421 | 1978-1987 | |
| 87 | Javier Serrano | 1.427 | 2015-2019 | |
| 88 | John Armstrong# | 1.429 | 2010-2016 | |
| 88 | Ángel López | 1.429 | 1973-1988 | |
| 90 | Randy Wright | 1.436 | 1995-2003 | |
| 91 | Archie Green | 1.438 | 1973-1978 | |
| 92 | Kevin Thomas | 1.439 | 1970-1979 | |
| 92 | Steve Black | 1.439 | 1971-1977 | |
| 94 | Armando Limón | 1.444 | 1991-1995 | |
| 95 | Carlos García | 1.445 | 2003-2013 | |
| 96 | Ramón Reyes | 1.446 | 1978-1985 | |
| 97 | Fernando Nieves | 1.447 | 1979-1985 | |
| 98 | Justin Thomas | 1.449 | 2016-2021 | |
| 99 | William Parker | 1.451 | 2002-2012 | |
| 100 | Luis Caro | 1.453 | 1988-1997 |
