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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Owen Cunningham | 1.066 | 2014 | |
| 2 | Guillermo Montoya# | 1.046 | 2017 | |
| 3 | Ronald Shelton# | 1.040 | 2016 | |
| 4 | Dave King# | 1.039 | 2016 | |
| 5 | Tomás Gonzáles# | 1.036 | 2015 | |
| 6 | Dave King# | 1.035 | 2015 | |
| 7 | Henry Potts# | 1.031 | 2016 | |
| 8 | Henry Potts# | 1.029 | 2017 | |
| 9 | Bill Becker# | 1.028 | 2015 | |
| 10 | Jack Weber# | 1.027 | 2015 | |
| 11 | Jason Nicholson# | 1.023 | 2014 | |
| 11 | Ron Humboldt# | 1.023 | 2016 | |
| 13 | Joe Shaw# | 1.022 | 2017 | |
| 14 | Tomás Gonzáles# | 1.020 | 2014 | |
| 15 | James Bolden# | 1.019 | 2015 | |
| 16 | Randy Battle | 1.018 | 2015 | |
| 17 | Ed Anderson# | 1.017 | 2016 | |
| 18 | Carlos Vázquez# | 1.013 | 2017 | |
| 18 | Kyle Dempsey# | 1.013 | 2016 | |
| 20 | Ben Ramey | 1.012 | 2014 | |
| 21 | Noel Ballard# | 1.008 | 2017 | |
| 22 | Dave King# | 1.005 | 2017 | |
| 23 | Rodrigo Luna# | 1.004 | 2014 | |
| 24 | Zhenechka Alchevsky# | 1.003 | 2014 | |
| 25 | Tomás Gonzáles# | 1.002 | 2016 | |
| 25 | Fernando López# | 1.002 | 2014 | |
| 27 | Jason Nicholson# | 0.996 | 2016 | |
| 28 | Gonzalo López# | 0.995 | 2017 | |
| 29 | Danny Spencer# | 0.993 | 2014 | |
| 30 | Pedro Cruz# | 0.992 | 2017 | |
| 31 | Joe Ferneyhough# | 0.988 | 2015 | |
| 32 | Danny Spencer# | 0.987 | 2015 | |
| 33 | Noel Ballard# | 0.980 | 2016 | |
| 34 | Lúcio Montoya# | 0.979 | 2017 | |
| 34 | Wesley Osborne# | 0.979 | 2014 | |
| 36 | Danny Spencer# | 0.974 | 2016 | |
| 37 | Ricardo Cruz# | 0.972 | 2015 |
