| Career - Worst WHIP | |||
| Rk | Player Name | Totals | |
| 1 | Adam Eaton | 1.52 | |
| 2 | Matt Garza | 1.47 | |
| 3 | Framber Valdez | 1.45 | |
| 4 | Noah Lowry | 1.44 | |
| 5 | David Cone | 1.43 | |
| 6 | Gio Gonzalez | 1.43 | |
| 7 | Yovani Gallardo | 1.42 | |
| 8 | Mark Mulder | 1.40 | |
| 9 | Sandy Alcantara | 1.40 | |
| 10 | Tyson Ross | 1.39 | |
| 11 | Zach Davies | 1.36 | |
| 12 | Alex Fernandez | 1.33 | |
| 13 | Jason Frasor | 1.32 | |
| 14 | Woody Williams | 1.31 | |
| 15 | Ben McDonald | 1.30 | |
| 16 | Roger Clemens | 1.29 | |
| 17 | Danny Duffy | 1.29 | |
| 18 | Melido Perez | 1.28 | |
| 19 | Hiroki Kuroda | 1.27 | |
| 20 | Alex Colome | 1.25 | |
| 21 | Jered Weaver | 1.22 | |
| 22 | Jesse Crain | 1.18 | |
| 23 | Greg Maddux | 1.17 | |
| 24 | Juan Guzman | 1.16 | |
| 25 | Walker Buehler | 1.13 | |
| Single Season - Worst WHIP | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Fernando Valenzuela | 1.74 | 1994 | ||
| 2 | Doug Davis | 1.68 | 2006 | ||
| 3 | Brian Lawrence | 1.64 | 2004 | ||
| 4 | Willie Banks | 1.63 | 1994 | ||
| 5 | Adam Eaton | 1.62 | 2006 | ||
| 6 | Eddie Butler | 1.62 | 2018 | ||
| 7 | Greg Maddux | 1.61 | 1991 | ||
| 8 | Ted Higuera | 1.58 | 1991 | ||
| 9 | Bruce Chen | 1.55 | 2001 | ||
| 10 | Gio Gonzalez | 1.54 | 2016 | ||
| 11 | Miguel Batista | 1.53 | 2003 | ||
| 12 | Tyson Ross | 1.51 | 2016 | ||
| 13 | Framber Valdez | 1.51 | 2022 | ||
| 14 | Glendon Rusch | 1.49 | 2005 | ||
| 15 | Woody Williams | 1.49 | 2001 | ||
| 16 | Matt Garza | 1.49 | 2010 | ||
| 17 | Mike Thurman | 1.48 | 2000 | ||
| 18 | Ben McDonald | 1.47 | 1994 | ||
| 19 | Carl Pavano | 1.47 | 2001 | ||
| 20 | Greg Maddux | 1.46 | 2000 | ||
| 21 | Gio Gonzalez | 1.46 | 2014 | ||
| 22 | Mark Mulder | 1.45 | 2005 | ||
| 23 | Noah Lowry | 1.45 | 2006 | ||
| 24 | Wilfredo Ledezma | 1.45 | 2007 | ||
| 25 | Aaron Laffey | 1.45 | 2009 | ||