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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Víctor Proano | 1.101 | 1990-1997 | |
| 2 | Eduardo Martínez# | 1.074 | 2013-2023 | |
| 3 | José Javier | 1.072 | 1992-2000 | |
| 3 | Bailey Johnston# | 1.072 | 2011-2023 | |
| 5 | Sabino Salas | 1.063 | 2000-2014 | |
| 6 | José Silva# | 1.053 | 2012-2023 | |
| 7 | Leo Kennedy | 1.048 | 1991-2001 | |
| 8 | Héctor Mora | 1.047 | 2006-2016 | |
| 9 | Forrest O'Herlihy | 1.045 | 1991-2005 | |
| 10 | Ernesto Negrón | 1.044 | 1997-2010 | |
| 11 | Ken Hamilton | 1.043 | 1983-1999 | |
| 11 | Leonard Lawrence# | 1.043 | 2011-2023 | |
| 13 | Harry Marsh | 1.040 | 2006-2013 | |
| 14 | Rodney Rainey# | 1.037 | 2012-2023 | |
| 15 | Donald Collins# | 1.036 | 2014-2023 | |
| 15 | Ron Hammond | 1.036 | 1999-2008 | |
| 17 | Jimmy Fox | 1.034 | 2005-2021 | |
| 17 | Kyle Hunter | 1.034 | 2002-2015 | |
| 19 | Nicolas Clay | 1.032 | 2015-2022 | |
| 19 | Yoshitoshi Hara | 1.032 | 2012-2021 | |
| 19 | Clay Vinson* | 1.032 | 1999-2018 | |
| 22 | Manuel Martínez | 1.031 | 2008-2018 | |
| 23 | John Clayton | 1.030 | 1996-2005 | |
| 23 | Ron Owens | 1.030 | 2002-2010 | |
| 25 | Tony Worley | 1.028 | 1994-2005 | |
| 25 | Tom Taylor | 1.028 | 2008-2023 | |
| 27 | Francisco Sánchez# | 1.027 | 2013-2023 | |
| 27 | Roberto Flores | 1.027 | 1995-2002 | |
| 29 | Bill Evans | 1.024 | 2007-2022 | |
| 30 | Pedro Canales# | 1.023 | 2014-2023 | |
| 30 | Curt Dickerson | 1.023 | 2010-2019 | |
| 32 | Richard Campbell | 1.022 | 1994-2006 | |
| 32 | Enrique Cardona | 1.022 | 1983-1997 | |
| 32 | John Dewolfe# | 1.022 | 2016-2023 | |
| 35 | Rob MacDonald | 1.021 | 1991-1998 | |
| 36 | Héctor Aranda | 1.019 | 1997-2006 | |
| 36 | Doug Birch | 1.019 | 1989-1998 | |
| 38 | Robert Bryant* | 1.017 | 1996-2011 | |
| 39 | Graciano Silveiros | 1.016 | 1990-2000 | |
| 40 | Martín Martínez# | 1.015 | 2017-2023 | |
| 40 | Tom Reid | 1.015 | 2004-2012 | |
| 42 | Dave Maxwell | 1.013 | 2008-2018 | |
| 43 | Francisco Marino | 1.010 | 1996-2006 | |
| 44 | Jeff Hicks* | 1.007 | 1993-2006 | |
| 44 | Jorge Ramos | 1.007 | 1995-2009 | |
| 46 | Tommy Wilson | 1.005 | 1989-2005 | |
| 47 | Bill Sanderson | 1.004 | 2003-2011 | |
| 47 | Jorge Trujillo | 1.004 | 2002-2016 | |
| 47 | Jason Hackman | 1.004 | 2008-2021 | |
| 50 | A.C. Bader | 1.003 | 1996-2003 | |
| 51 | José Espinosa | 1.002 | 1993-2000 | |
| 52 | Paco Medina# | 1.001 | 2014-2023 | |
| 52 | Matthew Rodgers# | 1.001 | 2015-2023 | |
| 54 | Bob Johnson | .999 | 1995-2011 | |
| 55 | Pedro Canpos | .998 | 1995-2005 | |
| 55 | Art Burton | .998 | 1997-2008 | |
| 57 | Phil Smith | .996 | 1995-2007 | |
| 57 | Jesús Sepúlveda | .996 | 1995-2007 | |
| 59 | Dan Hicks | .995 | 1994-2011 | |
| 59 | Tony Marino | .995 | 1987-2001 | |
| 61 | César González# | .994 | 2014-2023 | |
| 62 | Steve Mitchell# | .993 | 2008-2023 | |
| 63 | Taylor McCormick | .992 | 2009-2018 | |
| 63 | Luis Pantoja | .992 | 1996-2007 | |
| 63 | Dennis Ryan | .992 | 1994-2008 | |
| 63 | Jeffrey Conrad | .992 | 1998-2009 | |
| 67 | Luis Echanove# | .991 | 2012-2023 | |
| 68 | José Serna | .990 | 2004-2018 | |
| 69 | Michael Kennedy# | .988 | 2014-2023 | |
| 69 | John Williamson# | .988 | 2013-2023 | |
| 69 | Ed Bush | .988 | 2009-2021 | |
| 72 | Clinton Picot | .987 | 1991-2006 | |
| 73 | Derek Gaines | .985 | 2006-2017 | |
| 74 | Jason David | .984 | 2004-2018 | |
| 75 | John Williams | .982 | 2003-2010 | |
| 76 | Ron Bly | .981 | 1990-2003 | |
| 76 | Norberto Ríos | .981 | 2000-2007 | |
| 78 | Leslie Ford | .980 | 1997-2006 | |
| 79 | Whit Bradshaw | .979 | 2006-2020 | |
| 80 | Phil Garrison | .978 | 2006-2015 | |
| 81 | Jeff Sloan | .977 | 1994-2005 | |
| 82 | Mark Harris | .975 | 2002-2010 | |
| 82 | Bo Walsh | .975 | 2006-2021 | |
| 82 | Fernando Cisneros | .975 | 1996-2010 | |
| 85 | Eric White# | .970 | 2016-2023 | |
| 85 | Rafael Cortés | .970 | 1989-1998 | |
| 87 | Anastasio González | .969 | 2003-2012 | |
| 88 | Pedro González | .968 | 1998-2009 | |
| 89 | Dan Dawson | .966 | 1988-2005 | |
| 90 | Geoffrey Barnes | .964 | 1989-1999 | |
| 90 | Wes Newman | .964 | 2004-2009 | |
| 90 | John Woodruff | .964 | 2011-2022 | |
| 93 | Stephen Woodward# | .963 | 2012-2023 | |
| 93 | Wallace Jacobson | .963 | 1999-2007 | |
| 95 | Cary Barnes | .962 | 1999-2010 | |
| 96 | John O'Brian# | .961 | 2014-2023 | |
| 97 | Andre Thomas | .957 | 2011-2021 | |
| 97 | Ramón Liendo# | .957 | 2017-2023 | |
| 97 | Jim Whitney | .957 | 1989-2001 | |
| 100 | José Ortíz | .955 | 1986-1998 |
