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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Brandon Dickson | 1.26 | 2010-2012 | |
| 2 | Eduardo Rodriguez# | 1.32 | 2014-2018 | |
| 3 | Ryan Feierabend | 1.34 | 2007-2014 | |
| 3 | Nathan Eovaldi# | 1.34 | 2013-2015 | |
| 5 | Collin Wiles# | 1.35 | 2022-2025 | |
| 6 | Vladimir Gutierrez# | 1.39 | 2020-2025 | |
| 6 | Tommy Milone | 1.39 | 2016-2023 | |
| 6 | Dylan File# | 1.39 | 2020-2025 | |
| 6 | Deolis Guerra | 1.39 | 2013-2022 | |
| 10 | Brent Honeywell Jr.# | 1.40 | 2018-2020 | |
| 11 | Luke Weaver# | 1.43 | 2017-2024 | |
| 12 | Braden Shipley | 1.46 | 2017-2024 | |
| 12 | Scott Diamond | 1.46 | 2013-2021 | |
| 14 | Brent Suter# | 1.47 | 2017-2023 | |
| 14 | Jose De Leon# | 1.47 | 2017-2025 | |
| 16 | Clayton Richard | 1.49 | 2013-2017 | |
| 17 | Mitch White# | 1.51 | 2019-2023 | |
| 18 | Simon Castro | 1.52 | 2013-2020 | |
| 19 | Mike Wright | 1.53 | 2015-2024 | |
| 20 | Allen Webster | 1.54 | 2013-2021 | |
| 21 | Humberto Mejia# | 1.55 | 2022-2025 | |
| 21 | Brad Mills | 1.55 | 2013-2017 | |
| 21 | Lucas Harrell | 1.55 | 2013-2018 | |
| 24 | Ross Detwiler | 1.57 | 2014-2024 | |
| 24 | John Gast | 1.57 | 2013-2017 | |
| 24 | Paolo Espino# | 1.57 | 2016-2024 | |
| 27 | Kyle McGowin# | 1.58 | 2019-2025 | |
| 27 | Brandon Cumpton | 1.58 | 2014-2019 | |
| 27 | Brett Kennedy# | 1.58 | 2019-2023 | |
| 30 | Rob Scahill | 1.59 | 2013-2019 | |
| 30 | Felix Doubront | 1.59 | 2016-2019 | |
| 32 | Burch Smith | 1.61 | 2016-2022 | |
| 33 | Casey Crosby | 1.63 | 2013-2016 | |
| 34 | Brock Stewart# | 1.64 | 2017-2023 | |
| 35 | Kolby Allard# | 1.65 | 2018-2021 | |
| 35 | Brooks Raley# | 1.65 | 2014-2024 | |
| 37 | Dillon Overton | 1.69 | 2016-2022 | |
| 38 | Brooks Hall | 1.71 | 2015-2023 | |
| 38 | Brandon Leibrandt# | 1.71 | 2018-2025 |
