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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Chris Welch# | 0.476 | 2026 | |
| 2 | Bobby Purdy# | 0.746 | 2021 | |
| 3 | Ryan Werner# | 0.810 | 2026 | |
| 4 | Dan Sanchez | 0.880 | 2015 | |
| 5 | Jason Cox# | 0.936 | 2019 | |
| 6 | Jason Cox# | 0.959 | 2020 | |
| 7 | Mike Kopff# | 0.979 | 2026 | |
| 8 | Mark Stuart# | 1.043 | 2021 | |
| 9 | Kyle Smith | 1.075 | 2009 | |
| 10 | Dan Fischer# | 1.086 | 2020 | |
| 11 | Brandon Jones# | 1.091 | 2021 | |
| 12 | James Dobyns# | 1.152 | 2018 | |
| 13 | Tim Iden# | 1.191 | 2026 | |
| 14 | Adam Wright | 1.200 | 2015 | |
| 15 | Jeremy Harrison# | 1.203 | 2025 | |
| 16 | Bryan Hallberg# | 1.221 | 2021 | |
| 17 | John Blackman# | 1.240 | 2023 | |
| 17 | Nate Miller | 1.240 | 2005 | |
| 19 | Isaiah Forrest# | 1.272 | 2024 | |
| 20 | Chris Welch# | 1.286 | 2023 | |
| 21 | Greg Proctor# | 1.291 | 2026 | |
| 22 | Dan Bruce# | 1.298 | 2025 | |
| 23 | Andy Gregory# | 1.350 | 2025 | |
| 24 | Josh Saur# | 1.364 | 2026 | |
| 25 | Phil Gregoire# | 1.367 | 2010 | |
| 26 | Jim Wallace# | 1.378 | 2024 | |
| 27 | B.J. Gonzalez# | 1.381 | 2022 | |
| 28 | Isaiah Butts | 1.385 | 2008 | |
| 29 | James Dobyns# | 1.389 | 2021 | |
| 30 | Jason Phillips | 1.397 | 2016 | |
| 31 | Chris McGiffin# | 1.405 | 2025 | |
| 32 | Jonathan Higginbotham | 1.406 | 2007 | |
| 33 | Drew Hanson# | 1.414 | 2026 | |
| 34 | Mark Tobin# | 1.427 | 2026 | |
| 35 | Matt Simpson# | 1.435 | 2020 | |
| 36 | Jon Thomas | 1.440 | 2013 | |
| 37 | Dan Fischer# | 1.444 | 2021 | |
| 38 | Joe Bernard# | 1.449 | 2025 | |
| 39 | Jimmy DeMoss# | 1.456 | 2024 | |
| 40 | Jon Clark# | 1.470 | 2024 | |
| 41 | Chris McDougall# | 1.473 | 2026 | |
| 42 | Mike Showalter# | 1.475 | 2026 | |
| 43 | Bill Flowers# | 1.492 | 2009 | |
| 44 | Evan Edelstein# | 1.515 | 2024 | |
| 45 | Justin Roberts | 1.523 | 2009 | |
| 46 | Justin Roberts | 1.534 | 2008 | |
| 47 | Joe Bernard# | 1.539 | 2024 | |
| 48 | Andre Bright | 1.543 | 2011 | |
| 48 | Zach Jackson# | 1.543 | 2022 | |
| 48 | Ethan Gallman# | 1.543 | 2024 | |
| 51 | Josh McQuaid# | 1.561 | 2016 | |
| 51 | Bob Bramlett | 1.561 | 2016 | |
| 53 | Jim Wallace# | 1.562 | 2025 | |
| 54 | Justin Stutz | 1.563 | 2005 | |
| 55 | Phil Woodall# | 1.565 | 2025 | |
| 56 | Ryan Jones# | 1.578 | 2025 | |
| 57 | Josh Williams# | 1.588 | 2024 | |
| 57 | Isaiah Butts | 1.588 | 2006 | |
| 57 | Chris Allen# | 1.588 | 2025 | |
| 57 | Dustin Engstrom# | 1.588 | 2021 | |
| 61 | Mike Rappa | 1.620 | 2013 | |
| 62 | Kareem Craig# | 1.627 | 2016 | |
| 63 | John Blackman# | 1.628 | 2021 | |
| 64 | Adam Monteleone# | 1.636 | 2024 | |
| 65 | Ryan Berwick# | 1.646 | 2025 | |
| 66 | Jake Kunkel# | 1.648 | 2026 | |
| 67 | Ben Gallegos# | 1.653 | 2024 | |
| 68 | Matt Robbins# | 1.669 | 2026 | |
| 68 | Allan Clemente# | 1.669 | 2022 | |
| 70 | Gabriel Huey | 1.670 | 2015 | |
| 71 | Bryan Aldrich# | 1.671 | 2026 | |
| 72 | Kevin Kovach# | 1.677 | 2017 | |
| 73 | Ian McSorley | 1.678 | 2007 | |
| 74 | Phil Brush# | 1.680 | 2026 | |
| 75 | Ian Martin# | 1.688 | 2026 | |
| 76 | Kevin Hogge# | 1.697 | 2026 | |
| 77 | Chris Welch# | 1.705 | 2024 | |
| 78 | Ryan Olsen# | 1.707 | 2020 | |
| 79 | Josh Lambert# | 1.709 | 2023 | |
| 80 | Edwardo Rodriguez# | 1.710 | 2025 | |
| 81 | Matt Conwell# | 1.714 | 2026 | |
| 81 | Alan Champagne# | 1.714 | 2020 | |
| 83 | Shawn McMurtry | 1.717 | 2009 | |
| 84 | Adam Monteleone# | 1.731 | 2023 | |
| 85 | Bobby Henderson# | 1.734 | 2024 | |
| 86 | Joe Olk# | 1.738 | 2026 | |
| 86 | Josh Woods | 1.738 | 2015 | |
| 88 | Adam Wright | 1.742 | 2016 | |
| 88 | Travis Troy# | 1.742 | 2026 | |
| 90 | Edwardo Rodriguez# | 1.750 | 2024 | |
| 91 | Lee Fidler | 1.751 | 2017 | |
| 92 | Stuart Maness# | 1.755 | 2022 | |
| 92 | Will Gardner# | 1.755 | 2025 | |
| 94 | Josh Williams# | 1.764 | 2025 | |
| 95 | Brandon Jones# | 1.770 | 2019 | |
| 96 | Steve McKee# | 1.776 | 2026 | |
| 97 | Jonathan Davila | 1.790 | 2008 | |
| 98 | Matt Simpson# | 1.809 | 2021 | |
| 99 | John Cook | 1.810 | 2017 | |
| 100 | Logan Stone | 1.811 | 2006 |
