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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | K9 | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jeffrey Stone# | 12.03 | 2021 | |
| 2 | Stephen Strasburg# | 11.92 | 2021 | |
| 3 | Lucas Giolito# | 11.91 | 2021 | |
| 4 | Stephen Strasburg# | 11.84 | 2013 | |
| 5 | Lucas Giolito# | 11.75 | 2022 | |
| 6 | Alberto Vega# | 11.69 | 2021 | |
| 7 | Lucas Giolito# | 11.56 | 2020 | |
| 8 | Stephen Strasburg# | 11.55 | 2014 | |
| 9 | Stephen Strasburg# | 11.51 | 2015 | |
| 10 | Clayton Kershaw# | 11.44 | 2020 | |
| 11 | Stephen Strasburg# | 11.12 | 2020 | |
| 12 | Robinson Rivera# | 11.09 | 2022 | |
| 13 | Tim Lincecum# | 11.03 | 2015 | |
| 14 | Tim Lincecum# | 11.00 | 2021 | |
| 15 | Brandon Beachy | 10.99 | 2014 | |
| 16 | Clayton Kershaw# | 10.91 | 2015 | |
| 17 | Clayton Kershaw# | 10.82 | 2021 | |
| 18 | Danny Hultzen# | 10.80 | 2022 | |
| 19 | Matthew Liberatore# | 10.75 | 2022 | |
| 20 | Justin Hooper# | 10.64 | 2022 | |
| 21 | Bill Black# | 10.63 | 2021 | |
| 21 | Tim Lincecum# | 10.63 | 2012 | |
| 23 | Gerrit Cole# | 10.61 | 2021 | |
| 24 | Gerrit Cole# | 10.60 | 2022 | |
| 25 | Justin Hooper# | 10.59 | 2023 | |
| 26 | Alberto Vega# | 10.55 | 2019 | |
| 27 | Gerrit Cole# | 10.48 | 2020 | |
| 28 | Mark Davies# | 10.47 | 2021 | |
| 29 | Riley Ferguson# | 10.42 | 2022 | |
| 30 | Bill Black# | 10.41 | 2022 | |
| 31 | Tommy Hanson | 10.37 | 2014 | |
| 31 | Kolby Allard# | 10.37 | 2023 | |
| 33 | Paul Erickson# | 10.31 | 2023 | |
| 33 | Tim Lincecum# | 10.31 | 2020 | |
| 35 | Kolby Allard# | 10.29 | 2021 | |
| 36 | David Price | 10.24 | 2015 | |
| 37 | Dave Smith# | 10.22 | 2021 | |
| 38 | Pedro Magana# | 10.20 | 2021 | |
| 39 | Kyle Cody# | 10.16 | 2021 | |
| 40 | Shohei Ohtani# | 10.14 | 2021 | |
| 41 | Trevor Bauer# | 10.13 | 2019 | |
| 42 | Alberto Vega# | 10.11 | 2018 | |
| 43 | Chris Sale# | 10.10 | 2020 | |
| 44 | Trevor Bauer# | 10.09 | 2020 | |
| 45 | Walker Buehler# | 10.06 | 2022 | |
| 46 | Shohei Ohtani# | 10.04 | 2020 | |
| 47 | Danny Hultzen# | 10.01 | 2021 | |
| 47 | Paul Erickson# | 10.01 | 2022 | |
| 47 | Justin Hooper# | 10.01 | 2021 | |
| 50 | Trevor Bauer# | 10.00 | 2021 | |
| 50 | Jeffery LeBlanc# | 10.00 | 2020 | |
| 52 | Tim Lincecum# | 9.99 | 2016 | |
| 53 | Cody McCutc# | 9.98 | 2022 | |
| 53 | Trevor Bauer# | 9.98 | 2022 | |
| 55 | Stephen Strasburg# | 9.96 | 2016 | |
| 56 | Justin Hooper# | 9.93 | 2020 | |
| 57 | Lucas Giolito# | 9.92 | 2019 | |
| 57 | Danny Hultzen# | 9.92 | 2020 | |
| 59 | Stephen Strasburg# | 9.91 | 2017 | |
| 59 | Jeffery LeBlanc# | 9.91 | 2021 | |
| 59 | Justin Hooper# | 9.91 | 2019 | |
| 62 | Clayton Kershaw# | 9.89 | 2014 | |
| 62 | Broderick Wilson# | 9.89 | 2017 | |
| 64 | Lucas Giolito# | 9.86 | 2016 | |
| 65 | Clayton Kershaw# | 9.85 | 2018 | |
| 66 | Alberto Vega# | 9.84 | 2017 | |
| 67 | Gary Griffith# | 9.83 | 2021 | |
| 68 | Pedro Magana# | 9.82 | 2020 | |
| 69 | Danny Hultzen# | 9.81 | 2023 | |
| 70 | Mike Minor | 9.78 | 2012 | |
| 71 | Keyvius Sampson# | 9.77 | 2021 | |
| 72 | Matthew Liberatore# | 9.76 | 2021 | |
| 72 | Drew Childs | 9.76 | 2018 | |
| 74 | Shohei Ohtani# | 9.75 | 2022 | |
| 75 | Brandon Beachy | 9.72 | 2012 | |
| 75 | Tommy Hanson | 9.72 | 2012 | |
| 77 | Matt Barnes# | 9.70 | 2018 | |
| 78 | Sean Gilmartin# | 9.69 | 2016 | |
| 79 | Shawn Stephens# | 9.68 | 2021 | |
| 80 | Kodai Senga# | 9.67 | 2021 | |
| 81 | Tim Lincecum# | 9.65 | 2013 | |
| 81 | Sean Gilmartin# | 9.65 | 2021 | |
| 83 | Michael Matuella# | 9.64 | 2021 | |
| 84 | Miguel Pineda# | 9.62 | 2021 | |
| 85 | Clayton Kershaw# | 9.58 | 2017 | |
| 86 | Raynel Velette# | 9.56 | 2016 | |
| 87 | Tim Lincecum# | 9.55 | 2018 | |
| 87 | Lucas Giolito# | 9.55 | 2018 | |
| 89 | Ryan Weathers# | 9.53 | 2023 | |
| 89 | Riley Ferguson# | 9.53 | 2023 | |
| 91 | Kyle Cody# | 9.50 | 2018 | |
| 91 | Jeff Wallace# | 9.50 | 2020 | |
| 93 | Brady Aiken# | 9.46 | 2021 | |
| 93 | Chris Scalise# | 9.46 | 2021 | |
| 93 | Kolby Allard# | 9.46 | 2020 | |
| 96 | Keyvius Sampson# | 9.45 | 2015 | |
| 96 | Jeffery LeBlanc# | 9.45 | 2022 | |
| 98 | Alberto Vega# | 9.43 | 2016 | |
| 99 | Zach Lee# | 9.42 | 2021 | |
| 99 | Jordan Lyles# | 9.42 | 2022 |
