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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Seitaro Yamada# | 1.140 | 2017-2018 | |
| 2 | John Edwards# | 1.072 | 2012-2017 | |
| 3 | Dave Wallace | 1.064 | 2012-2015 | |
| 4 | Chris Estes# | 1.040 | 2012-2017 | |
| 4 | Emílio González# | 1.040 | 2013-2017 | |
| 6 | Rodrigo Rivera# | 1.034 | 2012-2017 | |
| 7 | Orlando Ortíz# | 1.020 | 2013-2016 | |
| 8 | Kyle Gardner# | 1.019 | 2012-2017 | |
| 8 | Kanko Noguchi# | 1.019 | 2016-2017 | |
| 10 | Albin Disanti# | 1.008 | 2015-2018 | |
| 11 | Nobuhisa Takeuchi# | 1.007 | 2016-2018 | |
| 12 | Jeffrey Smith# | 1.005 | 2012-2015 | |
| 13 | Ciriaco Croce# | 0.983 | 2013-2017 | |
| 14 | Conceição Loff# | 0.982 | 2013-2016 | |
| 15 | Jesús Romero# | 0.976 | 2015-2018 | |
| 16 | Martín Torres# | 0.975 | 2014-2018 | |
| 17 | Ramón Ruíz# | 0.971 | 2013-2016 | |
| 17 | Fraser Wells# | 0.971 | 2012-2015 | |
| 19 | Alfredo Villalobos# | 0.963 | 2012-2014 | |
| 20 | Juan Rosa# | 0.955 | 2013-2015 | |
| 21 | Salvador Mata# | 0.937 | 2016-2018 | |
| 22 | Manuel Rivera# | 0.912 | 2017-2018 | |
| 23 | Zachary Wonnocott# | 0.885 | 2016-2018 |
