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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | B9 | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Josh Tomlin | 1.48 | 2011-2022 | |
| 2 | Masahiro Tanaka | 1.88 | 2014-2021 | |
| 3 | Pablo Lopez# | 1.91 | 2021-2025 | |
| 4 | Zach Eflin# | 1.96 | 2018-2025 | |
| 5 | Kyle Hendricks# | 1.99 | 2016-2024 | |
| 5 | Shane Bieber# | 1.99 | 2020-2025 | |
| 7 | Rick Porcello | 2.00 | 2011-2021 | |
| 8 | Henderson Alvarez | 2.07 | 2012-2016 | |
| 8 | Tommy Milone | 2.07 | 2012-2017 | |
| 8 | Joe Musgrove# | 2.07 | 2012-2025 | |
| 11 | Chris Paddack# | 2.08 | 2020-2025 | |
| 12 | Sean Doolittle | 2.10 | 2011-2022 | |
| 13 | Smith Smith | 2.11 | 2002-2017 | |
| 14 | A.J. Griffin | 2.12 | 2014-2017 | |
| 15 | Miles Mikolas# | 2.16 | 2010-2025 | |
| 15 | Jacob Degrom# | 2.16 | 2012-2025 | |
| 17 | Doug Fister | 2.18 | 2011-2018 | |
| 17 | Mike Leake | 2.18 | 2010-2020 | |
| 17 | John Means# | 2.18 | 2020-2025 | |
| 20 | Madison Bumgarner | 2.19 | 2011-2023 | |
| 21 | Ricky Nolasco | 2.23 | 2007-2017 | |
| 21 | Kevin Gausman# | 2.23 | 2013-2025 | |
| 21 | Bryse Wilson# | 2.23 | 2020-2025 | |
| 24 | Phil Hughes | 2.25 | 2009-2018 | |
| 25 | Anthony DeSclafani# | 2.26 | 2012-2024 | |
| 26 | Nathan Eovaldi# | 2.27 | 2012-2025 | |
| 26 | Koji Uehara | 2.27 | 2009-2018 | |
| 28 | Smith Smith | 2.28 | 2004-2017 | |
| 29 | Hyun-Jin Ryu | 2.29 | 2013-2023 | |
| 29 | Richard Bleier | 2.29 | 2010-2023 | |
| 29 | Jordan Zimmermann | 2.29 | 2010-2021 | |
| 32 | Liam Hendriks# | 2.30 | 2012-2025 | |
| 33 | Tommy Hunter | 2.32 | 2010-2020 | |
| 34 | Walker Buehler# | 2.34 | 2019-2025 | |
| 34 | Marcus Stroman# | 2.34 | 2015-2024 | |
| 36 | Mike Soroka# | 2.36 | 2019-2024 | |
| 37 | James Shields | 2.39 | 2007-2019 | |
| 37 | Tarik Skubal# | 2.39 | 2022-2025 | |
| 39 | Jason Vargas | 2.40 | 2010-2020 | |
| 39 | Corey Kluber | 2.40 | 2011-2023 | |
| 41 | Gerrit Cole# | 2.42 | 2012-2025 | |
| 41 | Sean Manaea# | 2.42 | 2018-2025 | |
| 41 | Brett Anderson | 2.42 | 2010-2021 | |
| 44 | Aaron Civale# | 2.44 | 2020-2025 | |
| 44 | Vance Worley | 2.44 | 2012-2018 | |
| 46 | Kris Medlen | 2.45 | 2010-2016 | |
| 46 | Catfish Hunter | 2.45 | 1965-1976 | |
| 46 | Seth Lugo# | 2.45 | 2012-2025 | |
| 46 | Jose Berrios# | 2.45 | 2016-2025 | |
| 46 | Tanner Roark | 2.45 | 2010-2022 | |
| 51 | Andrew Heaney# | 2.46 | 2018-2025 | |
| 51 | Matt Andriese | 2.46 | 2012-2023 | |
| 53 | Yusmeiro Petit | 2.48 | 2009-2021 | |
| 54 | Jameson Taillon# | 2.49 | 2014-2025 | |
| 54 | Justin Verlander# | 2.49 | 2007-2025 | |
| 56 | Matt Harvey | 2.50 | 2014-2021 | |
| 56 | Michael Pineda | 2.50 | 2011-2023 | |
| 56 | Chris Sale# | 2.50 | 2011-2024 | |
| 56 | Matthew Boyd# | 2.50 | 2019-2025 | |
| 60 | Luis Severino# | 2.51 | 2016-2025 | |
| 61 | Max Scherzer# | 2.52 | 2009-2025 | |
| 62 | Clayton Kershaw# | 2.54 | 2009-2025 | |
| 62 | Casey Janssen | 2.54 | 2007-2016 | |
| 62 | David Price | 2.54 | 2009-2023 | |
| 65 | Kyle Kendrick | 2.55 | 2008-2015 | |
| 65 | Hisashi Iwakuma | 2.55 | 2013-2018 | |
| 67 | Johnny Cueto | 2.56 | 2010-2023 | |
| 67 | Smith Smith | 2.56 | 2003-2018 | |
| 67 | Julio Urias# | 2.56 | 2018-2023 | |
| 67 | Adam Wainwright | 2.56 | 2004-2023 | |
| 71 | Mat Latos | 2.59 | 2010-2016 | |
| 71 | Mark Melancon | 2.59 | 2010-2023 | |
| 73 | Matt Shoemaker | 2.61 | 2015-2021 | |
| 74 | Michael Fulmer# | 2.62 | 2012-2025 | |
| 74 | Luke Hochevar | 2.62 | 2010-2018 | |
| 76 | Jered Weaver | 2.64 | 2007-2017 | |
| 76 | Jon Niese | 2.64 | 2009-2016 | |
| 78 | Wei-Yin Chen | 2.65 | 2012-2018 | |
| 78 | Framber Valdez# | 2.65 | 2022-2025 | |
| 80 | Aaron Nola# | 2.66 | 2015-2025 | |
| 81 | Robbie Erlin# | 2.68 | 2010-2023 | |
| 81 | Sergio Romo | 2.68 | 2010-2021 | |
| 81 | Logan Webb# | 2.68 | 2015-2025 | |
| 84 | Scott Baker | 2.69 | 2006-2014 | |
| 84 | Collin McHugh | 2.69 | 2010-2024 | |
| 84 | Stephen Strasburg# | 2.69 | 2010-2025 | |
| 84 | Mike Minor | 2.69 | 2010-2023 | |
| 84 | Taijuan Walker# | 2.69 | 2012-2025 | |
| 89 | Matt Belisle | 2.70 | 2004-2018 | |
| 89 | John Lackey | 2.70 | 2003-2017 | |
| 91 | Ivan Nova | 2.71 | 2011-2021 | |
| 92 | Kenta Maeda# | 2.72 | 2016-2025 | |
| 93 | Larry Dierker | 2.73 | 1964-1976 | |
| 93 | Tony Watson | 2.73 | 2011-2021 | |
| 93 | Brandon McCarthy | 2.73 | 2006-2019 | |
| 96 | Carlos Carrasco | 2.74 | 2010-2023 | |
| 96 | Marco Estrada | 2.74 | 2012-2019 | |
| 96 | Cole Hamels | 2.74 | 2007-2022 | |
| 99 | Jake Peavy | 2.75 | 2002-2018 | |
| 99 | Ranger Suarez# | 2.75 | 2020-2024 |
