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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ed Sims# | 1.140 | 2017-2023 | |
| 2 | Alfredo López | 1.121 | 1991-1999 | |
| 3 | Leonard Jackson | 1.120 | 2012-2019 | |
| 4 | António Lucero | 1.079 | 1996-2008 | |
| 5 | Lorenzo Mejía | 1.072 | 1998-2014 | |
| 6 | Gene Baker# | 1.071 | 2016-2023 | |
| 7 | Jorge Martínez# | 1.068 | 2016-2023 | |
| 8 | Jesús Reyes | 1.065 | 1986-2000 | |
| 8 | Jonathan Manning | 1.065 | 2002-2017 | |
| 10 | Chris Murphy | 1.064 | 2001-2010 | |
| 11 | Gabriel Silva | 1.062 | 1999-2012 | |
| 12 | Toichi Baba | 1.056 | 1997-2014 | |
| 13 | Dennis Ward | 1.055 | 1997-2004 | |
| 14 | Donald Kelly | 1.053 | 2001-2010 | |
| 15 | Scott Funk | 1.052 | 2005-2017 | |
| 16 | Germán Ortíz | 1.051 | 1983-1998 | |
| 16 | Austin Horton | 1.051 | 2002-2014 | |
| 18 | Peter Cochran | 1.050 | 2011-2017 | |
| 19 | Ty Kelly | 1.049 | 2003-2011 | |
| 20 | John Black# | 1.044 | 2013-2023 | |
| 20 | Robert Belcher | 1.044 | 2008-2018 | |
| 20 | Victor Hicks# | 1.044 | 2012-2023 | |
| 23 | José López# | 1.042 | 2017-2023 | |
| 24 | Roberto Valentín | 1.041 | 2011-2017 | |
| 25 | Ryan Pope# | 1.031 | 2008-2023 | |
| 26 | Félix García | 1.030 | 1994-2002 | |
| 27 | Esteban Rodríguez | 1.018 | 2008-2019 | |
| 28 | Brock Cook | 1.017 | 2007-2015 | |
| 29 | Jeffery Becker | 1.016 | 1996-2008 | |
| 29 | Henry Winman | 1.016 | 1986-1999 | |
| 29 | Daniel Rowe | 1.016 | 2003-2013 | |
| 32 | Raúl Rodríguez | 1.015 | 2008-2021 | |
| 33 | Eric Booth | 1.014 | 1985-1998 | |
| 33 | Sam Leonard | 1.014 | 2002-2014 | |
| 33 | Thomas Jenkins | 1.014 | 2002-2018 | |
| 36 | Mike Farr | 1.013 | 2003-2014 | |
| 37 | Matt Wilkins | 1.009 | 2007-2019 | |
| 38 | Anderson Monroe | 1.002 | 1992-2003 | |
| 39 | Manol Travassos# | 1.000 | 2014-2023 | |
| 40 | Bob Morgan | .998 | 2000-2017 | |
| 40 | Martín Martínez | .998 | 2003-2016 | |
| 42 | Pat Kemp | .991 | 1997-2006 | |
| 43 | Robert Cobb | .984 | 2009-2020 | |
| 44 | Albert Torrez | .978 | 2002-2017 | |
| 44 | Woody Allen | .978 | 2000-2008 | |
| 46 | Joe Givens | .975 | 1994-2006 | |
| 46 | Arturo Morán | .975 | 2002-2014 | |
| 48 | Pedro Sandoval | .974 | 2001-2018 | |
| 49 | Miguel Sánchez# | .973 | 2010-2023 | |
| 50 | Craig Maynard | .959 | 2004-2020 | |
| 51 | Joe Hamilton | .954 | 2001-2018 | |
| 52 | Ramón Morán | .953 | 2002-2016 | |
| 53 | Luis Carranza* | .950 | 1986-2002 | |
| 53 | Rafael Pérez# | .950 | 2005-2023 | |
| 55 | Dustin Hawkins* | .949 | 2003-2018 | |
| 55 | Paul Meyer | .949 | 2001-2011 | |
| 57 | Frederick Mitchell# | .944 | 2011-2023 | |
| 58 | Mark Jackson | .937 | 1988-2002 | |
| 59 | Gilberto Muńóz | .935 | 2009-2022 | |
| 60 | Jim Huffman | .931 | 1995-2013 | |
| 61 | Albert Pérez | .927 | 1993-2005 | |
| 62 | Will Williams | .924 | 1994-2005 | |
| 63 | Mario Mercado | .919 | 2008-2021 | |
| 64 | David Cortés | .913 | 2002-2016 | |
| 64 | Bill Dawson | .913 | 1990-1998 | |
| 66 | Jon Cabrera | .910 | 2002-2012 | |
| 67 | Kenny Dukes | .906 | 2006-2022 | |
| 68 | Keith Whitfield* | .900 | 1985-2000 | |
| 69 | Billy Miller | .899 | 1997-2013 | |
| 70 | Luis Gómes | .894 | 1995-2004 | |
| 71 | Carlos Pérez | .851 | 1986-2000 | |
| 72 | Don Kelly* | .834 | 1984-2001 | |
| 73 | José Aguilar | .000 | 1975-1983 | |
| 73 | Stan Albert | .000 | 1973-1986 | |
| 73 | Thomas Allison | .000 | 1977-1987 | |
| 73 | David Arévalo | .000 | 1970-1982 | |
| 73 | Erik Armstrong* | .000 | 1970-1983 | |
| 73 | Eliot Arrington | .000 | 1970-1977 | |
| 73 | Clayton Austin | .000 | 1987-1993 | |
| 73 | Vincente Báez | .000 | 1977-1990 | |
| 73 | Artie Barlow | .000 | 1980-1986 | |
| 73 | Dwight Bell | .000 | 1982-1992 | |
| 73 | Alfred Bennett | .000 | 1970-1975 | |
| 73 | Boyd Bleeker | .000 | 1977-1988 | |
| 73 | Eldon Brown | .000 | 1970-1975 | |
| 73 | Emílio Cabrera | .000 | 1979-1993 | |
| 73 | Stephen Caldwell | .000 | 1978-1993 | |
| 73 | Ronald Clifton | .000 | 1978-1989 | |
| 73 | Sam Clinton | .000 | 1986-1993 | |
| 73 | Ron Day | .000 | 1975-1985 | |
| 73 | Bob DeWalt | .000 | 1986-1993 | |
| 73 | Bruce Dickinson | .000 | 1974-1983 | |
| 73 | Mike Farrell | .000 | 1983-1992 | |
| 73 | Joe Ferris | .000 | 1970-1982 | |
| 73 | Wilbert Field | .000 | 1984-1993 | |
| 73 | Jesús García | .000 | 1989-1996 | |
| 73 | Quinn Gilsthorpe | .000 | 1984-1991 | |
| 73 | Ricardo González | .000 | 1978-1988 | |
| 73 | Jason Greene | .000 | 1972-1980 | |
| 73 | Pablo Guillén | .000 | 1983-1997 |
