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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | En-guo Shuang | 1.138 | 1970-1976 | |
| 2 | Juan Ortega | 1.155 | 1970-1974 | |
| 3 | Luis Villarreal | 1.161 | 1999-2010 | |
| 4 | Pat Martin | 1.176 | 1973-1978 | |
| 5 | Ramón Pérez | 1.211 | 1972-1978 | |
| 6 | Joe Huff | 1.212 | 1985-1993 | |
| 6 | Ralph Small | 1.212 | 1970-1975 | |
| 8 | Reggie Dunbar | 1.216 | 1975-1981 | |
| 9 | António Hernández | 1.219 | 2003-2014 | |
| 10 | Evan Crowder | 1.226 | 1979-1989 | |
| 11 | Jed Hairston | 1.227 | 2005-2014 | |
| 12 | John Larson | 1.229 | 2007-2014 | |
| 13 | John Morrison | 1.231 | 1975-1980 | |
| 14 | Harrison Batt | 1.233 | 2007-2013 | |
| 15 | Lee Bentley | 1.234 | 2004-2015 | |
| 16 | Luis Crespo | 1.236 | 1976-1983 | |
| 17 | Darren Brown# | 1.237 | 2015-2022 | |
| 18 | Okura Agano | 1.244 | 1970-1982 | |
| 18 | Tokaji Sato | 1.244 | 2012-2021 | |
| 20 | Bob Young | 1.246 | 1999-2005 | |
| 21 | Jesús Solís | 1.252 | 1981-1989 | |
| 22 | Dino Messuti | 1.258 | 1995-2000 | |
| 22 | Jon Robinson | 1.258 | 1971-1978 | |
| 24 | Albert Parker | 1.259 | 1974-1981 | |
| 25 | Bob Brandt | 1.262 | 1995-2001 | |
| 26 | José Gallardo | 1.268 | 1983-1990 | |
| 26 | Marcos Trevino# | 1.268 | 2016-2023 | |
| 28 | Tony Feliciano | 1.275 | 1996-2008 | |
| 29 | Donovan Baker | 1.280 | 1984-1990 | |
| 29 | Ed Pride | 1.280 | 1997-2007 | |
| 31 | Pedro López | 1.287 | 2004-2015 | |
| 32 | Neil Hopkins | 1.290 | 2005-2011 | |
| 33 | Dirk Gibson | 1.292 | 1981-1986 | |
| 34 | William Hyde# | 1.296 | 2015-2023 | |
| 35 | Javier Vargas# | 1.297 | 2012-2020 | |
| 35 | Héctor García# | 1.297 | 2012-2022 | |
| 37 | Joseph Joicey | 1.298 | 1971-1978 | |
| 38 | Robinson Sánchez | 1.301 | 2003-2010 | |
| 39 | Juan Cordero | 1.305 | 2001-2008 | |
| 40 | Manny Castillo | 1.307 | 1970-1974 | |
| 40 | Jeff DeWalt | 1.307 | 1984-1997 | |
| 42 | Todd Fowler | 1.308 | 2010-2015 | |
| 42 | Pete Partlow | 1.308 | 1974-1981 | |
| 44 | Tony Fernández | 1.310 | 2008-2013 | |
| 45 | Adrian Epps | 1.313 | 2001-2015 | |
| 46 | Willie Green | 1.315 | 1997-2012 | |
| 47 | Todd Daniel | 1.316 | 1984-1995 | |
| 47 | Jon Cook | 1.316 | 2004-2011 | |
| 49 | Ernest French | 1.317 | 1975-1983 | |
| 50 | Jason Anderson | 1.322 | 2008-2015 | |
| 51 | Dave Catron | 1.326 | 2001-2009 | |
| 52 | Marcos Meléndez | 1.327 | 1989-1993 | |
| 53 | Seth Williams | 1.329 | 1990-1997 | |
| 53 | Sergio Torres | 1.329 | 1981-1989 | |
| 55 | Terry Wiley | 1.333 | 1970-1974 | |
| 55 | Thomas Graham | 1.333 | 1986-1991 | |
| 57 | Joe Perkins | 1.335 | 2003-2008 | |
| 58 | Gregorio Hernández | 1.336 | 2001-2015 | |
| 58 | Shawn Scott | 1.336 | 1973-1979 | |
| 60 | Ben Fuller | 1.339 | 1985-1992 | |
| 61 | Hubert Hogan | 1.340 | 1985-1994 | |
| 61 | Matt White | 1.340 | 1972-1977 | |
| 63 | Patrick Thompson | 1.342 | 1970-1974 | |
| 64 | Alfredo Rodríguez | 1.344 | 1973-1977 | |
| 65 | Jung-hwan Yi | 1.345 | 2003-2011 | |
| 66 | Paul Jones# | 1.347 | 2014-2023 | |
| 66 | Sergio Candelária | 1.347 | 1970-1973 | |
| 66 | Alan Kenney | 1.347 | 2005-2015 | |
| 69 | Lorenzo Vélez | 1.349 | 1993-1998 | |
| 69 | Conner Sanford | 1.349 | 1975-1984 | |
| 71 | Victor Johnson | 1.350 | 1981-1992 | |
| 72 | Reese Maxwell | 1.351 | 1994-2001 | |
| 73 | Juan García | 1.352 | 1970-1974 | |
| 74 | Anthony Tolbert | 1.353 | 1989-1994 | |
| 75 | Sandor Derksen | 1.354 | 1998-2008 | |
| 76 | George Simpson | 1.356 | 2009-2016 | |
| 77 | Muhuc Gasana | 1.357 | 2007-2015 | |
| 78 | Orlando Miranda | 1.358 | 1970-1975 | |
| 79 | Chris Brown | 1.360 | 2004-2016 | |
| 80 | Steve Gourin | 1.361 | 2004-2010 | |
| 81 | John Doyle | 1.363 | 2003-2015 | |
| 82 | Marc Cox# | 1.369 | 2014-2023 | |
| 83 | Mauro Herrera | 1.371 | 1970-1975 | |
| 84 | Joe Stewart | 1.373 | 2000-2009 | |
| 85 | Jesús Esparza | 1.374 | 2000-2006 | |
| 85 | Mike Hodges | 1.374 | 1981-1986 | |
| 87 | Xavier Hébert | 1.375 | 1970-1977 | |
| 87 | Clint Kelly | 1.375 | 1995-2002 | |
| 89 | Carlos Ortega | 1.376 | 1994-1999 | |
| 90 | Armando Yan# | 1.377 | 2017-2023 | |
| 90 | José Rivera | 1.377 | 1997-2006 | |
| 92 | Robert Phillips | 1.378 | 2008-2017 | |
| 93 | Bret Price | 1.387 | 2003-2012 | |
| 93 | Jesús Gómez | 1.387 | 1979-1987 | |
| 95 | Ken Kerr | 1.389 | 2011-2017 | |
| 95 | Jason McDonald | 1.389 | 1988-2000 | |
| 95 | Arnold Deveau | 1.389 | 2011-2016 | |
| 98 | Bernie Martin | 1.391 | 1979-1988 | |
| 98 | Bryan Woods | 1.391 | 2001-2009 | |
| 98 | Andrew Beck | 1.391 | 1970-1974 |
