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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Chris Medders | 1.140 | 2022 | |
| 2 | Jimmy Frew# | 1.124 | 2024 | |
| 3 | Ryan Barker# | 1.108 | 2022 | |
| 4 | Nick Sumney# | 1.106 | 2025 | |
| 5 | Nick Sumney# | 1.105 | 2024 | |
| 6 | Ed Woodside# | 1.096 | 2024 | |
| 7 | Dillon Rodriquez# | 1.093 | 2022 | |
| 7 | Jimmy Frew# | 1.093 | 2025 | |
| 9 | Aaron Kay | 1.091 | 2002 | |
| 10 | Aaron Kay | 1.090 | 2004 | |
| 10 | Ken Shaffer | 1.090 | 2004 | |
| 12 | Ken Shaffer | 1.088 | 2003 | |
| 13 | Adam McCumiskey# | 1.087 | 2025 | |
| 13 | Dillon Rodriquez# | 1.087 | 2018 | |
| 15 | Dillon Rodriquez# | 1.084 | 2019 | |
| 16 | Heath Graves# | 1.083 | 2024 | |
| 16 | Jerry Wilson | 1.083 | 2001 | |
| 18 | Pat Marchitto# | 1.082 | 2022 | |
| 19 | Aaron Kay | 1.079 | 2003 | |
| 19 | Ken Shaffer | 1.079 | 2001 | |
| 19 | Leo Gutierrez | 1.079 | 2021 | |
| 22 | Troy Appling# | 1.077 | 2025 | |
| 23 | Rich Noble | 1.076 | 2003 | |
| 24 | Jonathan Rivera | 1.075 | 2010 | |
| 25 | Oliver Damon# | 1.073 | 2023 | |
| 25 | Jose Figueroa | 1.073 | 2021 | |
| 27 | Jimmy Frew# | 1.071 | 2023 | |
| 28 | Scott Porter# | 1.069 | 2020 | |
| 28 | Rich Noble | 1.069 | 2004 | |
| 28 | Maik Penn# | 1.069 | 2022 | |
| 31 | Julio Gonzalez | 1.068 | 2011 | |
| 32 | Manuel Rosas# | 1.066 | 2025 | |
| 32 | Jeremy Yamakawa | 1.066 | 2007 | |
| 34 | Jose Figueroa | 1.065 | 2012 | |
| 35 | Ed Woodside# | 1.064 | 2025 | |
| 36 | Gary Dineen | 1.063 | 2008 | |
| 36 | Manuel Rosas# | 1.063 | 2022 | |
| 36 | Bill Clements | 1.063 | 2009 | |
| 36 | John Austin# | 1.063 | 2025 | |
| 36 | Manuel Rosas# | 1.063 | 2024 | |
| 36 | Rich Tangorra# | 1.063 | 2025 | |
| 42 | Aaron Kay | 1.062 | 2005 | |
| 42 | Andrew Baltzley# | 1.062 | 2021 | |
| 44 | Willie Torres | 1.061 | 2011 | |
| 44 | Jorge Padilla | 1.061 | 2009 | |
| 44 | Aaron Kay | 1.061 | 2001 | |
| 44 | Rich Noble | 1.061 | 2002 | |
| 48 | Gary Dineen | 1.060 | 2011 | |
| 48 | Scott Porter# | 1.060 | 2021 | |
| 48 | Oliver Damon# | 1.060 | 2024 | |
| 48 | Oliver Damon# | 1.060 | 2025 | |
| 48 | Gary Dineen | 1.060 | 2003 | |
| 48 | Willie Castanon | 1.060 | 2016 | |
| 48 | Manuel Rosas# | 1.060 | 2021 | |
| 55 | Julio Gonzalez | 1.059 | 2012 | |
| 55 | Rich Leggett | 1.059 | 2000 | |
| 55 | Jeremy Yamakawa | 1.059 | 2005 | |
| 55 | Nick Sumney# | 1.059 | 2023 | |
| 55 | Ron Forrest | 1.059 | 2004 | |
| 55 | John Austin# | 1.059 | 2024 | |
| 61 | Sean Baran# | 1.058 | 2021 | |
| 62 | Ryan Barker# | 1.057 | 2023 | |
| 62 | Rich Noble | 1.057 | 2000 | |
| 62 | Jimmy Frew# | 1.057 | 2022 | |
| 65 | Willie Castanon | 1.056 | 2017 | |
| 65 | Gary Dineen | 1.056 | 2013 | |
| 65 | Gary Dineen | 1.056 | 2007 | |
| 65 | Maik Penn# | 1.056 | 2018 | |
| 69 | Pat Marchitto# | 1.055 | 2021 | |
| 69 | Willie Torres | 1.055 | 2013 | |
| 69 | Bill Garcia | 1.055 | 2012 | |
| 72 | Sean Baran# | 1.054 | 2020 | |
| 72 | Dillon Rodriquez# | 1.054 | 2021 | |
| 74 | Luis Martinez | 1.053 | 2012 | |
| 74 | Gary Dineen | 1.053 | 2005 | |
| 74 | Sean Baran# | 1.053 | 2018 | |
| 74 | Gary Dineen | 1.053 | 2000 | |
| 74 | Mitch Kehr | 1.053 | 2004 | |
| 74 | Sean Baran# | 1.053 | 2016 | |
| 74 | Ken Shaffer | 1.053 | 2000 | |
| 74 | Maik Penn# | 1.053 | 2021 | |
| 82 | Gary Dineen | 1.052 | 2002 | |
| 82 | Jerry Campos | 1.052 | 2011 | |
| 82 | Emmanuel Haigler | 1.052 | 2005 | |
| 85 | Gary Dineen | 1.051 | 2006 | |
| 85 | Bill Garcia | 1.051 | 2013 | |
| 85 | Yasuro Sugimoto | 1.051 | 2011 | |
| 85 | Aaron Kay | 1.051 | 2012 | |
| 89 | John Austin# | 1.050 | 2021 | |
| 90 | Gary Dineen | 1.049 | 2012 | |
| 90 | Rich Leggett | 1.049 | 2001 | |
| 90 | Aaron Kay | 1.049 | 2006 | |
| 93 | Jose Figueroa | 1.048 | 2017 | |
| 93 | Guadalupe Dena | 1.048 | 2013 | |
| 93 | Adam McCumiskey# | 1.048 | 2024 | |
| 93 | Heath Graves# | 1.048 | 2025 | |
| 93 | Troy Appling# | 1.048 | 2023 | |
| 93 | Adam McCumiskey# | 1.048 | 2023 | |
| 99 | Brett Byrnes | 1.047 | 2003 | |
| 100 | Raul Arreola# | 1.046 | 2023 |
