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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Sixto Sanchez# | 0.87 | 2020 | |
| 2 | Nick Robison# | 0.93 | 2016 | |
| 3 | Sean Hjelle# | 0.94 | 2020 | |
| 4 | Ken Waldichuk# | 0.98 | 2021 | |
| 5 | Robert Gasser# | 1.01 | 2023 | |
| 6 | Alex Early# | 1.03 | 2023 | |
| 6 | Edward Small# | 1.03 | 2017 | |
| 6 | Austin Malinowski# | 1.03 | 2016 | |
| 9 | Billy Bishop# | 1.04 | 2020 | |
| 9 | Rich Beasley# | 1.04 | 2019 | |
| 9 | Alex Early# | 1.04 | 2022 | |
| 9 | James Marinan# | 1.04 | 2022 | |
| 9 | Kyle Rogers# | 1.04 | 2020 | |
| 14 | Ryan Sims# | 1.05 | 2021 | |
| 15 | Calvin Welch# | 1.06 | 2019 | |
| 15 | Kyle Rogers# | 1.06 | 2021 | |
| 15 | Billy Bishop# | 1.06 | 2022 | |
| 18 | Jud Graham# | 1.08 | 2017 | |
| 19 | Danny William# | 1.11 | 2017 | |
| 20 | Wes Clark# | 1.12 | 2019 | |
| 21 | T.J. Sikkema# | 1.14 | 2022 | |
| 22 | Cy Young, IV# | 1.15 | 2022 | |
| 23 | Maverick Kingsburry# | 1.16 | 2022 | |
| 24 | Billy Bishop# | 1.17 | 2021 | |
| 25 | Jorge Flores# | 1.18 | 2019 | |
| 26 | Robert Hayes | 1.19 | 2019 | |
| 26 | Tony Gutiérrez# | 1.19 | 2020 | |
| 26 | Lawrence Taylor# | 1.19 | 2017 | |
| 29 | Mason Denaburg# | 1.21 | 2020 | |
| 29 | Harry Richardson# | 1.21 | 2018 | |
| 29 | Jack Kochanowicz# | 1.21 | 2021 | |
| 32 | Esteban Vázquez# | 1.23 | 2020 | |
| 33 | Michael Torretta# | 1.25 | 2018 | |
| 33 | Justin Collop | 1.25 | 2012 | |
| 35 | Jack Kochanowicz# | 1.26 | 2023 | |
| 35 | Ryan Sims# | 1.26 | 2022 | |
| 37 | Drew Rom# | 1.27 | 2023 | |
| 37 | Reid Detmers# | 1.27 | 2021 | |
| 37 | Ray Harris | 1.27 | 2014 | |
| 40 | Carlos García | 1.28 | 2015 | |
| 40 | Julio Robina# | 1.28 | 2023 | |
| 42 | Billy Bishop# | 1.29 | 2019 | |
| 42 | Kyle Zimmer | 1.29 | 2014 | |
| 44 | Jeff Wiley | 1.30 | 2017 | |
| 45 | Alvin Tigner# | 1.31 | 2023 | |
| 46 | Tate Rodemaker# | 1.32 | 2023 | |
| 46 | Doug Nikhazy# | 1.32 | 2023 | |
| 46 | Mason Denaburg# | 1.32 | 2019 | |
| 49 | Alex Meyer | 1.33 | 2012 | |
| 49 | Ken Gary# | 1.33 | 2018 | |
| 49 | Víctor De La Rosa | 1.33 | 2014 | |
| 52 | Carlos Martínez# | 1.34 | 2023 | |
| 52 | Tahnaj Thomas# | 1.34 | 2021 | |
| 52 | Patrick Wischusen# | 1.34 | 2023 | |
| 55 | Skylar Spurrier# | 1.35 | 2021 | |
| 56 | Will Inman | 1.36 | 2012 | |
| 57 | Peter Solomon# | 1.37 | 2019 | |
| 57 | Anthony Klumpp# | 1.37 | 2018 | |
| 59 | Matt Parker# | 1.39 | 2020 | |
| 59 | Nathan Armstrong# | 1.39 | 2022 | |
| 61 | William Cuevas | 1.40 | 2014 | |
| 62 | Hideaki Hirose# | 1.42 | 2013 | |
| 63 | Eduardo Rodriguez# | 1.43 | 2015 | |
| 63 | Carlos Pimentel | 1.43 | 2013 | |
| 65 | Juan Romero# | 1.45 | 2014 | |
| 65 | José Ortega# | 1.45 | 2021 | |
| 67 | Richard White# | 1.46 | 2013 | |
| 68 | Bobby Simmons# | 1.47 | 2023 | |
| 68 | Don Day# | 1.47 | 2018 | |
| 70 | Domingo Tapia | 1.51 | 2013 | |
| 70 | J.D. Shockley# | 1.51 | 2020 | |
| 72 | Mason Radeke# | 1.52 | 2013 | |
| 73 | Jason McCracken# | 1.55 | 2014 | |
| 74 | Don Day# | 1.56 | 2017 | |
| 75 | Nino Guillaume# | 1.86 | 2018 |
