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|
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jorge Castillo# | 4.237 | 2018-2019 | |
| 2 | Paul O'Callahan# | 4.487 | 2017-2019 | |
| 3 | Herman Barnes# | 4.693 | 2017-2019 | |
| 4 | Allen Wilson# | 4.711 | 2016-2019 | |
| 5 | Bobby Martin | 4.765 | 2016-2017 | |
| 6 | Dan Riggs# | 4.891 | 2015-2019 | |
| 7 | Raúl Andrés# | 4.964 | 2016-2019 | |
| 8 | Louis McDowell# | 5.033 | 2016-2019 | |
| 9 | Paul Nance# | 5.158 | 2015-2019 | |
| 10 | Wilson Castillo# | 5.284 | 2015-2018 | |
| 11 | Willie Cameron# | 5.290 | 2016-2019 | |
| 12 | David Collingwood# | 5.307 | 2018-2019 | |
| 13 | Ricardo Martínez# | 5.393 | 2015-2019 | |
| 14 | Mike Lane# | 5.411 | 2016-2018 | |
| 15 | Pat Brown# | 5.412 | 2016-2019 | |
| 16 | Dalton García# | 5.507 | 2016-2017 | |
| 17 | Victor Powell# | 5.517 | 2016-2018 | |
| 18 | Keith Blanton# | 5.549 | 2017-2019 | |
| 19 | Hunter Durham | 5.598 | 2016-2017 | |
| 20 | José Ramírez# | 5.652 | 2016-2018 | |
| 21 | Jon Shankle# | 5.759 | 2017-2019 | |
| 22 | Doruk Oyan# | 5.792 | 2016-2018 | |
| 23 | John Adams# | 5.793 | 2016-2019 | |
| 24 | Mark Walker# | 5.837 | 2017-2019 | |
| 25 | Josh Cox# | 5.847 | 2016-2018 | |
| 26 | Doug Ryan# | 5.856 | 2016-2018 | |
| 27 | Alex Sullivan# | 5.914 | 2016-2017 | |
| 28 | Karl Pratt# | 5.915 | 2013-2017 | |
| 29 | José Acevedo# | 5.917 | 2013-2019 | |
| 30 | Gregory Gary# | 5.927 | 2016-2019 | |
| 31 | Dave Conley# | 5.928 | 2015-2018 | |
| 32 | Harvey Richards# | 5.991 | 2018-2019 | |
| 33 | Jesús Espinoza# | 6.031 | 2017-2019 | |
| 34 | César Arellano# | 6.049 | 2018-2019 | |
| 35 | Claudio Cruz# | 6.141 | 2016-2019 | |
| 36 | Melvin Lee# | 6.215 | 2015-2018 | |
| 37 | Jason Hubbell# | 6.220 | 2017-2019 | |
| 38 | Kevin Allen# | 6.281 | 2015-2018 | |
| 39 | Morris Nicholson# | 6.286 | 2013-2019 | |
| 40 | Donald Hutchinson# | 6.426 | 2017-2019 | |
| 41 | Sandro So Payo# | 6.501 | 2017-2018 | |
| 42 | Jesús González# | 6.509 | 2013-2018 | |
| 43 | Greg Beaver# | 6.630 | 2016-2019 | |
| 44 | Ramón Molina# | 6.645 | 2016-2018 | |
| 45 | Norm Burris# | 6.647 | 2016-2019 | |
| 46 | Tony Hernández# | 6.702 | 2016-2019 | |
| 47 | Eric Baxter# | 6.714 | 2017-2019 | |
| 48 | Aurélien Godet# | 6.743 | 2015-2019 | |
| 49 | Ron O'Slattery# | 6.763 | 2017-2019 | |
| 50 | Tom Howard | 6.831 | 2016-2017 | |
| 51 | Graham Wilson# | 6.856 | 2017-2019 | |
| 52 | Gilberto Ibarra# | 6.910 | 2017-2019 | |
| 53 | Francisco Hernández# | 6.975 | 2013-2018 | |
| 54 | Dan Pope# | 6.980 | 2016-2018 | |
| 55 | Max Moore# | 6.982 | 2017-2018 | |
| 56 | Kevin Fields# | 7.014 | 2013-2019 | |
| 57 | Kirk Evans# | 7.163 | 2016-2017 | |
| 58 | Dusty Mueller# | 7.176 | 2017-2018 | |
| 59 | Han Sawallisch# | 7.226 | 2016-2019 | |
| 60 | Andrés Martínez# | 7.384 | 2013-2019 | |
| 61 | Richard Meyer# | 7.434 | 2018-2019 | |
| 62 | Carl Dyess# | 7.513 | 2017-2019 | |
| 63 | Enrique Rodríguez# | 7.690 | 2013-2019 | |
| 64 | Brandeis Göller# | 7.804 | 2017-2019 | |
| 65 | Bill Swain# | 7.817 | 2017-2019 | |
| 66 | Michael Fields# | 8.728 | 2018-2019 |
