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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WPCT | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joe Sparks | 1.000 | 2015 | |
| 2 | George Connolly# | .957 | 2022 | |
| 3 | Yeong-sin Park# | .952 | 2029 | |
| 3 | CC Sabathia* | .952 | 2006 | |
| 5 | Lee Myers# | .900 | 2031 | |
| 6 | Joba Chamberlain | .889 | 2013 | |
| 7 | Nolan Arnold | .885 | 2014 | |
| 8 | Yeong-sin Park# | .875 | 2030 | |
| 8 | Kevin Schaefer | .875 | 2015 | |
| 8 | Joe Moore | .875 | 2019 | |
| 11 | Amdre Nova# | .870 | 2030 | |
| 11 | Heath Bell | .870 | 2010 | |
| 13 | Daniel Patterson | .864 | 2022 | |
| 14 | Jeff Shoemaker# | .862 | 2030 | |
| 15 | Archie Esparza# | .857 | 2027 | |
| 15 | Joe Sparks | .857 | 2013 | |
| 15 | Zack Greinke* | .857 | 2007 | |
| 18 | Scott Kazmir | .850 | 2009 | |
| 18 | Major Pixel | .850 | 2018 | |
| 20 | Lee Myers# | .846 | 2027 | |
| 20 | Jorge Flores# | .846 | 2029 | |
| 22 | James Ryan# | .842 | 2020 | |
| 22 | Chad Billingsley | .842 | 2019 | |
| 22 | Tim Pulliam# | .842 | 2031 | |
| 25 | Roger Clemens* | .839 | 1992 | |
| 26 | Andrew Bailey | .833 | 2014 | |
| 26 | Madison Bumgarner | .833 | 2024 | |
| 26 | Keith McCoy# | .833 | 2022 | |
| 26 | Madison Bumgarner | .833 | 2026 | |
| 26 | Roy Oswalt* | .833 | 2010 | |
| 26 | MacKenzie Gore# | .833 | 2030 | |
| 26 | Ian Richardson | .833 | 2011 | |
| 33 | Mike Hampton | .826 | 2003 | |
| 33 | Ameirin Pavlenov | .826 | 2017 | |
| 33 | Randy D Johnson | .826 | 1998 | |
| 33 | R A Dickey | .826 | 2008 | |
| 33 | Archie Esparza# | .826 | 2028 | |
| 38 | Leland Hart# | .824 | 2030 | |
| 38 | Roy Ward | .824 | 2022 | |
| 38 | Micah Olson# | .824 | 2020 | |
| 41 | Roy Ward | .818 | 2019 | |
| 41 | Rodney Sánchez# | .818 | 2027 | |
| 41 | Rick Cederberg# | .818 | 2026 | |
| 41 | Nolan Arnold | .818 | 2013 | |
| 41 | Chad Billingsley | .818 | 2013 | |
| 41 | Eddie Morgan* | .818 | 2009 | |
| 41 | James Ryan# | .818 | 2021 | |
| 41 | George Burke# | .818 | 2026 | |
| 41 | Anthony Hunt | .818 | 2020 | |
| 50 | Rich Burton | .815 | 2021 | |
| 50 | Tim Lincecum | .815 | 2011 | |
| 50 | Archie Esparza# | .815 | 2026 | |
| 53 | Noah Lowry | .812 | 2010 | |
| 53 | Gerrit Cole# | .812 | 2026 | |
| 53 | Roy Halladay* | .812 | 2007 | |
| 56 | Doug Jones | .810 | 2020 | |
| 56 | Mark Prior* | .810 | 2004 | |
| 56 | Justin Thompson | .810 | 2017 | |
| 56 | Josh Beckett* | .810 | 2015 | |
| 56 | Andrew Bailey | .810 | 2018 | |
| 56 | Raúl Mateo# | .810 | 2027 | |
| 62 | Aaron Sele* | .808 | 2003 | |
| 63 | Roger Clemens* | .806 | 1990 | |
| 64 | Nolan Arnold | .800 | 2015 | |
| 64 | Joba Chamberlain | .800 | 2021 | |
| 64 | Roberto Sánchez# | .800 | 2029 | |
| 64 | Rick Ankiel | .800 | 2000 | |
| 64 | Emílio García | .800 | 2021 | |
| 64 | Theron Prince | .800 | 2009 | |
| 64 | Dave Dowden | .800 | 2023 | |
| 64 | Major Pixel | .800 | 2010 | |
| 64 | Scott Kazmir | .800 | 2010 | |
| 64 | Julián Rosa# | .800 | 2021 | |
| 64 | Stanley High | .800 | 2021 | |
| 64 | Brian Dalton | .800 | 2010 | |
| 64 | Ryan Arnold | .800 | 2012 | |
| 77 | Joba Chamberlain | .792 | 2019 | |
| 77 | Eric Hurley | .792 | 2014 | |
| 77 | Kevin Schaefer | .792 | 2016 | |
| 77 | Zack Greinke* | .792 | 2012 | |
| 81 | Chris Carpenter | .789 | 1999 | |
| 81 | Craig O'Brien# | .789 | 2027 | |
| 81 | George Connolly# | .789 | 2020 | |
| 84 | Mark Prior* | .786 | 2007 | |
| 84 | John Christensen | .786 | 2021 | |
| 84 | Edmund Davis | .786 | 2017 | |
| 84 | Steve Mills# | .786 | 2030 | |
| 88 | Keith McCoy# | .783 | 2021 | |
| 88 | Jake Peavy | .783 | 2004 | |
| 88 | Mitch Craft# | .783 | 2029 | |
| 88 | Eddie Morgan* | .783 | 2017 | |
| 92 | Jason Ellis | .778 | 2018 | |
| 92 | Johan Santana | .778 | 2014 | |
| 92 | Juan Guzman* | .778 | 1991 | |
| 92 | Carlos Cotter | .778 | 2011 | |
| 92 | A J Burnett | .778 | 2002 | |
| 92 | Lewis Hanson# | .778 | 2030 | |
| 92 | Dorian Bunch# | .778 | 2023 | |
| 92 | Simon Duncombe | .778 | 2006 | |
| 92 | Joba Chamberlain | .778 | 2018 |
