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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Adam Scott# | 1.04 | 2021 | |
| 2 | Rafael Montero# | 1.10 | 2013 | |
| 2 | Manny Banuelos# | 1.10 | 2013 | |
| 4 | Alan Strong# | 1.12 | 2021 | |
| 5 | Tanner Peters | 1.15 | 2015 | |
| 6 | Denyi Reyes# | 1.16 | 2020 | |
| 7 | Jose Mujica# | 1.17 | 2021 | |
| 7 | Asher Wojciechowski# | 1.17 | 2021 | |
| 7 | A.J. Ladwig# | 1.17 | 2018 | |
| 10 | C.J. Riefenhauser | 1.19 | 2013 | |
| 10 | Kevin McAvoy | 1.19 | 2018 | |
| 12 | Denyi Reyes# | 1.20 | 2021 | |
| 13 | Jake Stinnett | 1.22 | 2017 | |
| 14 | Erick Leal | 1.23 | 2021 | |
| 14 | Chris Gau# | 1.23 | 2021 | |
| 16 | Ian Clarkin# | 1.25 | 2022 | |
| 16 | Gustavo Gomez | 1.25 | 2016 | |
| 16 | Gus Varland# | 1.25 | 2022 | |
| 19 | Nick Fraze# | 1.26 | 2022 | |
| 20 | Rylan Kaufman# | 1.28 | 2023 | |
| 20 | John Rooney# | 1.28 | 2022 | |
| 20 | Jose Taveras | 1.28 | 2020 | |
| 20 | David Goforth | 1.28 | 2013 | |
| 24 | Eduardo Rodriguez# | 1.31 | 2015 | |
| 24 | Jeff Ames | 1.31 | 2015 | |
| 24 | Domingo Tapia# | 1.31 | 2015 | |
| 27 | Matt Frisbee# | 1.32 | 2021 | |
| 27 | Jayson Aquino | 1.32 | 2015 | |
| 29 | Jio Orozco# | 1.33 | 2021 | |
| 29 | Eduardo Rodriguez# | 1.33 | 2014 | |
| 31 | Matt Brazis | 1.35 | 2014 | |
| 31 | Gus Varland# | 1.35 | 2021 | |
| 33 | Michael Strong | 1.36 | 2015 | |
| 34 | Michael Fulmer# | 1.37 | 2015 | |
| 34 | Austin Cox# | 1.37 | 2021 | |
| 36 | Jeff Ames | 1.41 | 2016 | |
| 36 | Manaure Martinez | 1.41 | 2015 | |
| 38 | Dae-Eun Rhee | 1.42 | 2014 | |
| 38 | Tanner Peters | 1.42 | 2014 | |
| 38 | Ian Clarkin# | 1.42 | 2017 | |
| 41 | Ian Clarkin# | 1.43 | 2016 | |
| 42 | Timothy Shibuya | 1.44 | 2014 | |
| 42 | Dan Camarena | 1.44 | 2017 | |
| 42 | Jayden Murray# | 1.44 | 2021 | |
| 45 | Jon Olsen# | 1.45 | 2022 | |
| 45 | Parker Markel# | 1.45 | 2013 | |
| 45 | Seth Blair | 1.45 | 2013 | |
| 45 | Jordan Johnson | 1.45 | 2020 | |
| 49 | Mack Lemieux# | 1.47 | 2018 | |
| 50 | Jonathan Dziedzic | 1.48 | 2015 | |
| 50 | Noah Syndergaard# | 1.48 | 2013 | |
| 52 | Mike Ruff# | 1.49 | 2022 | |
| 52 | Brendon Little# | 1.49 | 2021 | |
| 52 | Parker Bridwell | 1.49 | 2015 | |
| 55 | Eric Jokisch# | 1.50 | 2013 | |
| 55 | Lucas Knowles# | 1.50 | 2023 | |
| 55 | Silfredo Garcia | 1.50 | 2015 | |
| 55 | Dallas Beeler | 1.50 | 2013 | |
| 59 | Jordan Johnson | 1.53 | 2018 | |
| 59 | Ian Oxnevad# | 1.53 | 2018 | |
| 61 | Michael Fulmer# | 1.54 | 2014 | |
| 62 | Riley Davis# | 1.55 | 2023 | |
| 63 | Dallas Litscher# | 1.56 | 2021 | |
| 64 | A.J. Ladwig# | 1.57 | 2017 | |
| 64 | Ryan Merritt# | 1.57 | 2014 | |
| 64 | Chris Rodriguez# | 1.57 | 2020 | |
| 67 | Evan Fitterer# | 1.58 | 2023 | |
| 68 | Jordan Pries | 1.60 | 2013 | |
| 69 | Jorge Guzman# | 1.61 | 2021 | |
| 70 | Jeff Ames | 1.63 | 2014 | |
| 70 | Mason Radeke | 1.63 | 2017 | |
| 70 | Luis Diaz | 1.63 | 2014 | |
| 73 | Jack Leftwich# | 1.65 | 2023 | |
| 74 | Freicer Perez | 1.69 | 2018 | |
| 75 | Miguel Sulbaran | 1.74 | 2014 | |
| 76 | Silfredo Garcia | 1.77 | 2014 | |
| 77 | Blake Shouse | 1.83 | 2014 | |
| 78 | Jonathan Dziedzic | 1.89 | 2014 |
