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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ronald Patrick | 1.236 | 2018 | |
| 2 | Tipper Kengos* | 1.208 | 2001 | |
| 3 | Dash Kelly | 1.205 | 1996 | |
| 4 | Jorge Rodríguez* | 1.180 | 2023 | |
| 5 | Jorge Rodríguez* | 1.170 | 2022 | |
| 6 | Mike Love | 1.163 | 2022 | |
| 7 | Nick Moore | 1.158 | 2017 | |
| 7 | Roland Carroll | 1.158 | 1998 | |
| 9 | Adam Aarpen | 1.155 | 2002 | |
| 10 | Niguel Halime | 1.152 | 2004 | |
| 11 | Jorge López | 1.151 | 2041 | |
| 11 | Alfredo Salazar | 1.151 | 2003 | |
| 13 | Billy Ashley | 1.150 | 2003 | |
| 14 | Emory Sharp | 1.146 | 2021 | |
| 15 | Kal El | 1.145 | 2024 | |
| 15 | Johnnie Iraq* | 1.145 | 1997 | |
| 17 | Nick Moore | 1.144 | 2018 | |
| 18 | Mike Love | 1.139 | 2016 | |
| 19 | Chris Neal | 1.136 | 2007 | |
| 19 | Rocky Framaggio | 1.136 | 1996 | |
| 21 | Joey Rosko | 1.134 | 2019 | |
| 21 | Ed Mansfield | 1.134 | 2007 | |
| 23 | Clemente Serrano | 1.132 | 1996 | |
| 24 | Nick Moore | 1.131 | 2019 | |
| 25 | Tony Álvarez | 1.129 | 2007 | |
| 26 | Mike Love | 1.127 | 2015 | |
| 27 | José Muñóz | 1.126 | 2010 | |
| 28 | Ramón Batista | 1.125 | 2022 | |
| 29 | Mike Love | 1.124 | 2026 | |
| 29 | Chris Neal | 1.124 | 2006 | |
| 31 | Jorge Vargas | 1.123 | 2026 | |
| 31 | Ian Botham | 1.123 | 2001 | |
| 33 | Jorge Vargas | 1.122 | 2038 | |
| 33 | Lou Woodard | 1.122 | 2018 | |
| 33 | Alfred Brouthers | 1.122 | 2010 | |
| 33 | Daniel Kerber | 1.122 | 2001 | |
| 37 | Mike Love | 1.121 | 2021 | |
| 37 | Jean-Paul Jean-Paul | 1.121 | 1995 | |
| 39 | Ian Botham | 1.120 | 2003 | |
| 40 | Mike Love | 1.118 | 2023 | |
| 41 | Guillermo Rodríguez | 1.117 | 2018 | |
| 41 | Richard Wilcox | 1.117 | 2006 | |
| 41 | Pio Vallejo | 1.117 | 2003 | |
| 44 | Bill Burkholder | 1.116 | 2008 | |
| 44 | Jorge Rodríguez* | 1.116 | 2024 | |
| 46 | Emory Sharp | 1.115 | 2029 | |
| 46 | Théo Bourges# | 1.115 | 2042 | |
| 46 | Domingo Fierro | 1.115 | 2014 | |
| 49 | Sadaharu Oh, Jr. | 1.114 | 2004 | |
| 49 | Frank Boerner* | 1.114 | 1995 | |
| 49 | Ramón Calderón | 1.114 | 2019 | |
| 49 | Jean-Paul Jean-Paul | 1.114 | 2003 | |
| 53 | Daniel Kerber | 1.112 | 2000 | |
| 54 | Mike Love | 1.111 | 2017 | |
| 54 | Ian Botham | 1.111 | 2004 | |
| 56 | Lucero Guerra | 1.108 | 2026 | |
| 56 | Billy Ashley | 1.108 | 2002 | |
| 58 | Todd Schmidt | 1.107 | 2006 | |
| 59 | Guillermo Rodríguez | 1.106 | 2009 | |
| 59 | Jesús Fernández | 1.106 | 2033 | |
| 59 | Wes Savage | 1.106 | 2040 | |
| 59 | Carl Erickson | 1.106 | 1996 | |
| 63 | Josh Tyler | 1.105 | 2009 | |
| 63 | Billy Beauford | 1.105 | 2010 | |
| 63 | Bob White | 1.105 | 2012 | |
| 66 | Aires Penharanda | 1.104 | 2042 | |
| 67 | Bob Brandon | 1.103 | 2021 | |
| 67 | Jorge Rodríguez* | 1.103 | 2021 | |
| 69 | Rocky Framaggio | 1.102 | 2001 | |
| 69 | Alfred Brouthers | 1.102 | 2009 | |
| 71 | Michael Malkowski | 1.101 | 1995 | |
| 71 | Felipe Arroyo | 1.101 | 2008 | |
| 73 | León Morán | 1.100 | 2025 | |
| 73 | Josh Tyler | 1.100 | 2012 | |
| 73 | Alonso Lara | 1.100 | 2024 | |
| 76 | Jay Burns | 1.099 | 2005 | |
| 76 | Raúl Miranda | 1.099 | 2031 | |
| 78 | Niguel Halime | 1.098 | 2005 | |
| 78 | Mike Love | 1.098 | 2019 | |
| 78 | Alfredo Salazar* | 1.098 | 2026 | |
| 81 | Gipper Kengos | 1.097 | 2041 | |
| 81 | Alfredo Salazar* | 1.097 | 2028 | |
| 83 | León Morán | 1.096 | 2023 | |
| 83 | Aaron Staff | 1.096 | 2001 | |
| 83 | Héctor Canó* | 1.096 | 2025 | |
| 86 | Mark Paul Gosselaar | 1.095 | 1998 | |
| 86 | Hank Carl | 1.095 | 1998 | |
| 88 | Pete Davis# | 1.094 | 2054 | |
| 88 | Ralph Benson | 1.094 | 2025 | |
| 88 | Daniel Fabiano | 1.094 | 1997 | |
| 91 | Will Simmons | 1.093 | 2003 | |
| 92 | Will Simmons | 1.091 | 2002 | |
| 92 | Ian Botham | 1.091 | 2000 | |
| 92 | Bob Brandon | 1.091 | 2025 | |
| 95 | Rocky Framaggio | 1.090 | 1995 | |
| 96 | Gipper Kengos | 1.089 | 2038 | |
| 96 | Ramiro Marino | 1.089 | 2031 | |
| 96 | António Ortíz | 1.089 | 2031 | |
| 96 | Valentín Colón | 1.089 | 2026 | |
| 96 | William Belcham | 1.089 | 2031 |
