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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gabriel Morales | 1.154 | 1968-1974 | |
| 2 | Sung-heun Yi | 1.122 | 1969-1986 | |
| 3 | Ollie Oglethorpe | 1.116 | 1966-1978 | |
| 4 | Shane Bascombe | 1.111 | 1995-2002 | |
| 5 | Leonardo Reyes | 1.093 | 1966-1973 | |
| 6 | Manuel González | 1.092 | 1995-2002 | |
| 7 | Tommy Brooks | 1.091 | 1956-1969 | |
| 8 | Willie Linsday | 1.090 | 1989-2005 | |
| 9 | Don Morris | 1.085 | 1971-1981 | |
| 10 | Greg Carter | 1.084 | 1964-1974 | |
| 10 | Peter Martin | 1.084 | 1976-1988 | |
| 12 | Jesús Barrón | 1.083 | 1991-2004 | |
| 13 | William George | 1.081 | 1975-1987 | |
| 13 | Lonnie Knowles | 1.081 | 1968-1980 | |
| 15 | David Gray | 1.079 | 1974-1993 | |
| 16 | Carlos García | 1.078 | 1974-1984 | |
| 17 | Robbie Long | 1.076 | 1962-1972 | |
| 18 | Steve Aguilar | 1.075 | 1994-2008 | |
| 19 | Eugene Henry | 1.073 | 1991-2001 | |
| 20 | Felipe Palácios | 1.072 | 2002-2009 | |
| 20 | Mike Biddulph | 1.072 | 1979-1993 | |
| 22 | Pat Townsend | 1.071 | 1988-2001 | |
| 23 | Noble Hendrickson | 1.070 | 1956-1969 | |
| 24 | Alberto Mercado | 1.063 | 1978-1990 | |
| 25 | Tyler Daniels* | 1.062 | 1977-1994 | |
| 26 | Peter Walter* | 1.061 | 1984-2005 | |
| 27 | Ramiro González | 1.058 | 1972-1979 | |
| 28 | Octávio Torres | 1.057 | 1984-1996 | |
| 29 | Manny Sanahia | 1.055 | 1986-1998 | |
| 30 | Vicente Martínez | 1.053 | 1970-1978 | |
| 31 | Gregory Guevara | 1.051 | 1982-1997 | |
| 32 | Ronald Williams | 1.050 | 1981-1999 | |
| 33 | Gary Smith | 1.049 | 2005-2011 | |
| 34 | Christian Woods | 1.045 | 1963-1981 | |
| 34 | Hayden Anderson | 1.045 | 1988-2001 | |
| 36 | Bartolo Varela | 1.044 | 1963-1976 | |
| 37 | Peter Holbrook | 1.043 | 1978-1991 | |
| 37 | George Larson | 1.043 | 1982-1997 | |
| 39 | Armando Rivera | 1.042 | 1977-1985 | |
| 40 | Chris Rose | 1.039 | 1979-1995 | |
| 40 | Bob Pierce | 1.039 | 1965-1977 | |
| 42 | Ben Armstrong | 1.038 | 1990-2001 | |
| 43 | Warner Boyd | 1.037 | 1965-1976 | |
| 43 | David Vázquez | 1.037 | 1971-1985 | |
| 45 | Alejandro Cabañas | 1.035 | 1990-1998 | |
| 45 | Bill Jackson | 1.035 | 1964-1978 | |
| 47 | Randy Vinson | 1.034 | 1997-2011 | |
| 48 | Alfonso Rivera | 1.033 | 1987-1999 | |
| 49 | Scott Ellison | 1.031 | 2000-2012 | |
| 50 | José Cruz# | 1.030 | 2003-2015 | |
| 51 | Adam Mitchell | 1.029 | 1974-1987 | |
| 52 | Carlos Valenzuela# | 1.027 | 2009-2015 | |
| 53 | Rubén Carrasco | 1.026 | 1977-1988 | |
| 54 | António González* | 1.025 | 1979-1994 | |
| 55 | Rafael Costa# | 1.022 | 1999-2015 | |
| 56 | Dominic Sullivan | 1.021 | 1982-1993 | |
| 57 | John Arteaga | 1.017 | 1954-1970 | |
| 57 | Bob Cochrane | 1.017 | 1972-1980 | |
| 59 | Rodrigo Velázquez | 1.016 | 1972-1984 | |
| 59 | Manuel Garza# | 1.016 | 2007-2015 | |
| 59 | Jeff Evans | 1.016 | 1988-1996 | |
| 62 | Tommy Chávez | 1.014 | 1986-1998 | |
| 63 | Tommy Cochrane* | 1.013 | 1976-1992 | |
| 64 | Ramón Vega | 1.012 | 1973-1979 | |
| 65 | Ron McGee | 1.010 | 1984-1992 | |
| 66 | Patrick Hays | 1.009 | 1984-2000 | |
| 66 | Keith Coleman | 1.009 | 1967-1980 | |
| 68 | Campbell Broomhead# | 1.008 | 2006-2015 | |
| 69 | Ernesto Álvarez | 1.007 | 1992-2010 | |
| 69 | António Moreno | 1.007 | 2001-2010 | |
| 71 | Arthur Henderson | 1.005 | 1981-1993 | |
| 71 | Mike Williamson | 1.005 | 1981-1999 | |
| 73 | Jack Bradford | 1.002 | 1977-1987 | |
| 74 | Ron Amador | 1.001 | 1991-1999 | |
| 75 | Hunter Peck | 0.998 | 1978-1990 | |
| 75 | Albert Gallegos | 0.998 | 1998-2013 | |
| 77 | Mark Sweeney# | 0.997 | 2004-2015 | |
| 78 | Juan Valadez | 0.995 | 1977-1985 | |
| 79 | Wilson Gonzáles* | 0.994 | 1978-2000 | |
| 80 | Alberto Rodríguez | 0.993 | 1999-2013 | |
| 81 | António Ruíz# | 0.992 | 2007-2015 | |
| 81 | Luis López# | 0.992 | 2006-2015 | |
| 81 | Andrés Arroyo | 0.992 | 1992-2002 | |
| 84 | Donald Hwang | 0.991 | 1960-1973 | |
| 85 | José Montaño | 0.989 | 1987-2000 | |
| 86 | José Aguilar | 0.988 | 1968-1979 | |
| 86 | Irving Spinks | 0.988 | 1992-2001 | |
| 88 | William Allison | 0.986 | 1993-2007 | |
| 89 | Logan Dawson | 0.985 | 1998-2005 | |
| 90 | Lonnie Morgan | 0.984 | 1986-2002 | |
| 91 | José Alfaro | 0.982 | 1993-2001 | |
| 92 | Cory Hunter | 0.981 | 1985-1995 | |
| 92 | Domingo Gutiérrez | 0.981 | 1972-1976 | |
| 94 | Danny Dickey | 0.979 | 2001-2012 | |
| 95 | Evan Underwood | 0.976 | 1991-2002 | |
| 95 | Carlos Díaz | 0.976 | 1987-1996 | |
| 97 | Henry Whitner | 0.975 | 1953-1971 | |
| 97 | Richard Malette | 0.975 | 1999-2008 | |
| 99 | Rocky Wooster | 0.974 | 1954-1972 | |
| 99 | Bobby Woods# | 0.974 | 2005-2015 |
