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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Marcus Stroman# | 1.02 | 2014 | |
| 2 | Brad Bergesen | 1.10 | 2015 | |
| 3 | Carl Edwards Jr.# | 1.19 | 2015 | |
| 4 | Casey Kelly# | 1.22 | 2022 | |
| 5 | Brad Bergesen | 1.24 | 2014 | |
| 6 | Mark Appel | 1.29 | 2015 | |
| 7 | Brad Peacock | 1.30 | 2016 | |
| 7 | David Buchanan# | 1.30 | 2022 | |
| 9 | Mason Adams# | 1.31 | 2025 | |
| 10 | Odrisamer Despaigne# | 1.32 | 2022 | |
| 10 | Brett Kerry# | 1.32 | 2024 | |
| 12 | William Cuevas# | 1.33 | 2023 | |
| 12 | Odrisamer Despaigne# | 1.33 | 2023 | |
| 12 | Barret Loux | 1.33 | 2016 | |
| 15 | Marcelo Martinez# | 1.34 | 2023 | |
| 15 | Jacob Turner | 1.34 | 2014 | |
| 15 | Luis Madero# | 1.34 | 2022 | |
| 15 | Austin Pruitt# | 1.34 | 2017 | |
| 19 | Charlie Barnes# | 1.35 | 2022 | |
| 19 | Eric Hacker | 1.35 | 2018 | |
| 21 | Jacob Nix# | 1.39 | 2023 | |
| 21 | Casey Kelly# | 1.39 | 2023 | |
| 23 | Robbie Erlin# | 1.41 | 2017 | |
| 23 | Adalberto Mejia | 1.41 | 2017 | |
| 25 | Rob Whalen | 1.42 | 2016 | |
| 26 | David Buchanan# | 1.43 | 2023 | |
| 26 | Miguel Celestino | 1.43 | 2015 | |
| 26 | Michael Kopech# | 1.43 | 2018 | |
| 26 | Mark Appel | 1.43 | 2016 | |
| 30 | Sam Gaviglio | 1.44 | 2017 | |
| 31 | Brady Lail | 1.46 | 2016 | |
| 31 | Drew Rucinski# | 1.46 | 2021 | |
| 31 | Cody Martin | 1.46 | 2013 | |
| 34 | Ryan Carpenter# | 1.47 | 2021 | |
| 34 | Williams Perez | 1.47 | 2021 | |
| 36 | Ryan Dennick | 1.48 | 2015 | |
| 36 | Ryan Carpenter# | 1.48 | 2022 | |
| 38 | Casey Kelly# | 1.51 | 2024 | |
| 38 | Luis Madero# | 1.51 | 2023 | |
| 38 | Eric Hacker | 1.51 | 2016 | |
| 38 | Dylan Axelrod | 1.51 | 2014 | |
| 42 | Logan Darnell | 1.52 | 2015 | |
| 42 | William Cuevas# | 1.52 | 2024 | |
| 42 | Drew Rucinski# | 1.52 | 2024 | |
| 42 | Ariel Pena | 1.52 | 2015 | |
| 46 | Justin Dunn# | 1.53 | 2024 | |
| 47 | Jakob Junis# | 1.54 | 2017 | |
| 47 | Eric Hacker | 1.54 | 2020 | |
| 47 | Zech Lemond | 1.54 | 2017 | |
| 50 | Brett Kerry# | 1.55 | 2022 | |
| 50 | Colin Rea# | 1.55 | 2021 | |
| 52 | Steven Wright | 1.57 | 2015 | |
| 52 | Tim Melville | 1.57 | 2015 | |
| 54 | Nick Travieso | 1.58 | 2015 | |
| 54 | Zachary Nuding | 1.58 | 2013 | |
| 54 | Tim Melville | 1.58 | 2014 | |
| 57 | Mikey O'Brien | 1.59 | 2015 | |
| 57 | James McArthur# | 1.59 | 2023 | |
| 59 | Zac Lowther# | 1.60 | 2023 | |
| 59 | Mario Hollands | 1.60 | 2016 | |
| 61 | Ryan Carpenter# | 1.62 | 2023 | |
| 61 | Tejay Antone# | 1.62 | 2024 | |
| 63 | Kyle Lobstein | 1.66 | 2013 | |
| 64 | Orangel Arenas | 1.69 | 2015 | |
| 65 | Aaron Thompson | 1.72 | 2013 | |
| 66 | Ryan Rolison# | 1.74 | 2024 | |
| 66 | David Festa# | 1.74 | 2024 | |
| 68 | Jack Patterson | 1.78 | 2021 | |
| 69 | Justin Nicolino | 1.93 | 2015 |
