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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Richard Corbin | 0.885 | 1978 | |
| 2 | Joe Huff | 0.920 | 1987 | |
| 3 | Skip Bailey | 0.954 | 2011 | |
| 4 | César Negrete | 0.955 | 2009 | |
| 5 | Leonard Day | 0.979 | 1971 | |
| 6 | Adrian Epps | 0.983 | 2015 | |
| 7 | Luis Villarreal | 0.988 | 2002 | |
| 8 | Tony Green | 0.989 | 1976 | |
| 8 | Juan Ortega | 0.989 | 1970 | |
| 10 | Jorge Sánchez# | 0.991 | 2017 | |
| 11 | Darren Brown# | 0.998 | 2017 | |
| 11 | Joseph Jones | 0.998 | 2007 | |
| 13 | Paul Morgan | 1.000 | 1994 | |
| 14 | Jeff DeWalt | 1.002 | 1988 | |
| 15 | Anastasio Gonzáles | 1.007 | 2010 | |
| 16 | Clyde MacEachan | 1.011 | 1975 | |
| 17 | Aaron Wright | 1.014 | 1975 | |
| 18 | En-guo Shuang | 1.020 | 1975 | |
| 18 | Rich Jones | 1.020 | 1979 | |
| 20 | Pat Martin | 1.022 | 1975 | |
| 20 | Chase Miller | 1.022 | 1995 | |
| 22 | Luis Villarreal | 1.023 | 2001 | |
| 23 | Javier Rosales | 1.026 | 1978 | |
| 24 | Marvin Billings | 1.028 | 1975 | |
| 25 | Steve Hanson | 1.029 | 1973 | |
| 25 | Mike Funk | 1.029 | 1978 | |
| 27 | Pepe Lugo | 1.031 | 2011 | |
| 28 | Jimmy Nickerson | 1.032 | 2010 | |
| 29 | Doyle Thomas | 1.034 | 1980 | |
| 29 | Joseph Long | 1.034 | 1978 | |
| 31 | Jeff Miller | 1.037 | 1971 | |
| 31 | Colby Dale | 1.037 | 1976 | |
| 31 | Tony Ramírez# | 1.037 | 2022 | |
| 34 | Jon Gentry | 1.039 | 1980 | |
| 35 | Morgan Briggs | 1.040 | 1970 | |
| 35 | Pedro Salas | 1.040 | 1972 | |
| 37 | Ricardo Cortéz | 1.041 | 1997 | |
| 37 | Valentín Betancourt | 1.041 | 1979 | |
| 39 | Willie Green | 1.052 | 2007 | |
| 39 | Lee Bentley | 1.052 | 2004 | |
| 41 | Roger Cahill# | 1.054 | 2009 | |
| 42 | Leonard Day | 1.055 | 1973 | |
| 43 | Okura Agano | 1.056 | 1973 | |
| 44 | Bill Davis | 1.059 | 2001 | |
| 45 | Michael Bowden* | 1.060 | 1979 | |
| 45 | Dave Miller | 1.060 | 1985 | |
| 47 | Juan Ortega | 1.061 | 1973 | |
| 48 | Robert Philip | 1.064 | 1971 | |
| 49 | Bill Funk | 1.065 | 1992 | |
| 50 | Geoffrey Hicks | 1.068 | 1975 | |
| 51 | Corbin Zimmerman | 1.069 | 2008 | |
| 52 | Stephen Hess | 1.073 | 2004 | |
| 52 | António Germán | 1.073 | 2000 | |
| 54 | León Muńóz | 1.074 | 2003 | |
| 55 | Geoff Kent | 1.075 | 1972 | |
| 56 | Guillermo López | 1.076 | 1973 | |
| 56 | Roberto Castro | 1.076 | 1972 | |
| 58 | Colt Whitley | 1.080 | 1974 | |
| 59 | Owen Koch# | 1.082 | 2020 | |
| 60 | Vicente Rodríguez | 1.083 | 2010 | |
| 61 | Ramón Pérez | 1.084 | 1974 | |
| 61 | Seth Williams | 1.084 | 1993 | |
| 61 | Juan García | 1.084 | 1970 | |
| 64 | Larry Nix | 1.089 | 1970 | |
| 65 | Shawn Price | 1.090 | 1974 | |
| 65 | Victor Johnson | 1.090 | 1985 | |
| 67 | Ralph Small | 1.091 | 1971 | |
| 68 | Chico Curro | 1.093 | 1997 | |
| 68 | Mitch Watson | 1.093 | 1970 | |
| 70 | Ray Ferguson | 1.095 | 2006 | |
| 71 | Tom Mitchell | 1.096 | 1975 | |
| 71 | Clyde MacEachan | 1.096 | 1976 | |
| 73 | Ray Walker | 1.098 | 2001 | |
| 74 | Arthur Pollock | 1.099 | 2009 | |
| 75 | Jason O'Herlihy | 1.108 | 1979 | |
| 75 | Johnny Evans | 1.108 | 2008 | |
| 75 | David Knight | 1.108 | 1972 | |
| 78 | Joe Francis | 1.109 | 1974 | |
| 78 | Ramón Pérez | 1.109 | 1975 | |
| 80 | Mario Rodríguez | 1.110 | 2011 | |
| 80 | Tony Feliciano | 1.110 | 1999 | |
| 80 | Doug Smith | 1.110 | 2001 | |
| 83 | Sancho Padilla | 1.111 | 1975 | |
| 84 | Vic MacGregor | 1.115 | 1975 | |
| 85 | David Worley | 1.116 | 1973 | |
| 85 | Reggie Dunbar | 1.116 | 1977 | |
| 87 | Lance Stanford# | 1.120 | 2016 | |
| 87 | Bailey Ford | 1.120 | 1975 | |
| 87 | Matt Drake | 1.120 | 1975 | |
| 87 | Dirk Gibson | 1.120 | 1981 | |
| 87 | Matt White | 1.120 | 1975 | |
| 87 | Michael Hill | 1.120 | 1973 | |
| 93 | Dino Messuti | 1.121 | 1997 | |
| 93 | Ryan Spencer# | 1.121 | 2009 | |
| 93 | Javier Vargas# | 1.121 | 2015 | |
| 96 | William Hyde# | 1.123 | 2020 | |
| 96 | Shawn Skinner | 1.123 | 1970 | |
| 98 | Sandor Derksen | 1.125 | 2002 | |
| 99 | Kip Riddle | 1.126 | 2013 | |
| 100 | Robert Ray | 1.127 | 1974 |
