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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Lance Goecker# | 0.463 | 2017 | |
| 2 | Josh Spratt# | 0.628 | 2025 | |
| 3 | Mike Kluttz# | 0.648 | 2017 | |
| 4 | Justin Roberts | 0.766 | 2005 | |
| 5 | Matt Graham# | 0.800 | 2014 | |
| 6 | John Manship# | 0.844 | 2016 | |
| 7 | Adam Noland# | 0.850 | 2020 | |
| 8 | Ian McCullar# | 0.878 | 2020 | |
| 8 | Casey Levy# | 0.878 | 2014 | |
| 10 | Rob Alvarez# | 0.894 | 2021 | |
| 11 | Josh Spratt# | 0.900 | 2026 | |
| 12 | Alejandro Martinez# | 0.910 | 2024 | |
| 13 | J.J. Goodwin# | 0.912 | 2026 | |
| 14 | Jay Lembo | 0.957 | 2005 | |
| 15 | Mark Crocker# | 0.994 | 2014 | |
| 16 | Andy Shoemaker# | 1.015 | 2009 | |
| 17 | Pat Wilber# | 1.038 | 2017 | |
| 17 | Rick Collins# | 1.038 | 2015 | |
| 19 | Dave Gulbranson# | 1.068 | 2024 | |
| 20 | Dave Brewton | 1.098 | 2006 | |
| 21 | Isaiah Singletary# | 1.102 | 2021 | |
| 21 | Danny Heasley# | 1.102 | 2025 | |
| 23 | Kyle Julias# | 1.110 | 2016 | |
| 24 | Dan Vatalaro# | 1.112 | 2025 | |
| 25 | Fred Taylor# | 1.117 | 2016 | |
| 26 | Mitch Wojciechowski# | 1.125 | 2021 | |
| 27 | Danny Heasley# | 1.160 | 2024 | |
| 28 | Tony Morales# | 1.167 | 2018 | |
| 28 | Jim Murphy# | 1.167 | 2019 | |
| 30 | John Hennig# | 1.219 | 2019 | |
| 30 | B.J. Rudolph# | 1.219 | 2015 | |
| 32 | Tom Tchida# | 1.243 | 2016 | |
| 33 | Andy Merrick# | 1.276 | 2022 | |
| 34 | Omar Valentin# | 1.303 | 2021 | |
| 35 | Brad Porretta# | 1.312 | 2021 | |
| 35 | Rick Collins# | 1.312 | 2014 | |
| 37 | Marshall Jimenez | 1.328 | 2011 | |
| 38 | Omar Valentin# | 1.335 | 2019 | |
| 39 | Dave Gulbranson# | 1.342 | 2026 | |
| 39 | Jonathan Sites# | 1.342 | 2025 | |
| 41 | Mike Hutto# | 1.350 | 2026 | |
| 41 | Ed Jenkins# | 1.350 | 2010 | |
| 41 | Josh Howard# | 1.350 | 2021 | |
| 44 | Eric Ellington# | 1.358 | 2024 | |
| 45 | Dave Gulbranson# | 1.360 | 2023 | |
| 46 | Keith O'Brien# | 1.367 | 2026 | |
| 47 | David Ryan# | 1.370 | 2021 | |
| 48 | Steve Esquivel# | 1.373 | 2025 | |
| 49 | Dusty Nelson# | 1.390 | 2018 | |
| 49 | Drew Hanson# | 1.390 | 2022 | |
| 51 | Zachery Shaw# | 1.400 | 2022 | |
| 51 | Jim Sylvester# | 1.400 | 2013 | |
| 53 | Craig Breakfield# | 1.403 | 2026 | |
| 54 | Ryan Roeser# | 1.421 | 2018 | |
| 54 | J.R. Mitchell# | 1.421 | 2008 | |
| 56 | Justin Hesley# | 1.430 | 2017 | |
| 57 | Chris Gagarian# | 1.438 | 2024 | |
| 58 | Max Hercules | 1.440 | 2014 | |
| 59 | Nick Horrocks# | 1.446 | 2017 | |
| 60 | Patrick Billue | 1.454 | 2011 | |
| 61 | Josh Boyd# | 1.464 | 2024 | |
| 62 | Angel Morales# | 1.465 | 2015 | |
| 63 | Angel Beas# | 1.475 | 2024 | |
| 63 | Joe Valance# | 1.475 | 2025 | |
| 65 | Justin Hickman | 1.488 | 2004 | |
| 65 | Mickey Ferrell | 1.488 | 2005 | |
| 67 | Joe Brackett# | 1.491 | 2015 | |
| 68 | Ray Dappen# | 1.500 | 2016 | |
| 68 | Jason Stoute# | 1.500 | 2014 | |
| 70 | Mike Goosen | 1.512 | 2012 | |
| 70 | Lee Maher# | 1.512 | 2016 | |
| 72 | Allen Ellingson# | 1.521 | 2023 | |
| 72 | Adam Noland# | 1.521 | 2021 | |
| 72 | Dave Anderson# | 1.521 | 2021 | |
| 75 | Jonathon Perry# | 1.532 | 2021 | |
| 76 | Jonathan Johnson# | 1.543 | 2022 | |
| 77 | Justin Roberts | 1.549 | 2006 | |
| 77 | Ted Tygart# | 1.549 | 2015 | |
| 77 | Adam Wright | 1.549 | 2011 | |
| 80 | Jonathan Marich# | 1.562 | 2007 | |
| 80 | Tom Ramirez# | 1.562 | 2022 | |
| 82 | Joel Harper | 1.577 | 2008 | |
| 82 | Chris Phillips# | 1.577 | 2017 | |
| 84 | Dave Lievens | 1.578 | 2001 | |
| 84 | Ed Gonell# | 1.578 | 2025 | |
| 86 | Andy Slagel# | 1.588 | 2025 | |
| 86 | Andrew Braden# | 1.588 | 2020 | |
| 86 | Dan Vatalaro# | 1.588 | 2024 | |
| 89 | Jared Fryman# | 1.599 | 2021 | |
| 90 | Mike Hrdlicka# | 1.600 | 2021 | |
| 91 | Jon McDonald# | 1.612 | 2009 | |
| 92 | Mike Nave | 1.631 | 2003 | |
| 93 | Jadon Bernard | 1.636 | 2007 | |
| 93 | Dave Lynch | 1.636 | 2009 | |
| 95 | Curtis Gring# | 1.642 | 2015 | |
| 96 | Tyler Murphy# | 1.649 | 2022 | |
| 97 | Justin Pennington | 1.653 | 2011 | |
| 98 | Corey Gruver# | 1.662 | 2003 | |
| 99 | Matt Alms | 1.674 | 2002 | |
| 99 | Derek Sigers# | 1.674 | 2021 |
