| Career - Worst WHIP | |||
| Rk | Player Name | Totals | |
| 1 | Jose DeJesus | 1.61 | |
| 2 | Pete Harnisch | 1.50 | |
| 3 | C.C. Sabathia | 1.47 | |
| 4 | Andy Pettitte | 1.46 | |
| 5 | Greg Swindell | 1.46 | |
| 6 | Gil Heredia | 1.39 | |
| 7 | Chris Haney | 1.37 | |
| 8 | Mark Buehrle | 1.36 | |
| 9 | Jeff Fassero | 1.35 | |
| 10 | Kevin Gausman | 1.34 | |
| 11 | David Cone | 1.33 | |
| 12 | Jamie Moyer | 1.32 | |
| 13 | Derek Lowe | 1.32 | |
| 14 | Ian Kennedy | 1.32 | |
| 15 | Robbie Ray | 1.31 | |
| 16 | Julio Urias | 1.27 | |
| 17 | Anibal Sanchez | 1.26 | |
| 18 | Jon Gray | 1.25 | |
| 19 | Ted Lilly | 1.23 | |
| 20 | Roy Halladay | 1.15 | |
| 21 | Edwin Diaz | 1.11 | |
| 22 | Chris Sale | 1.05 | |
| 23 | Jonathan Papelbon | 1.01 | |
| 24 | Kenley Jansen | 1.01 | |
| Single Season - Worst WHIP | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Martin Perez | 1.79 | 2020 | ||
| 2 | Jose DeJesus | 1.76 | 1991 | ||
| 3 | Matt Clement | 1.72 | 2001 | ||
| 4 | Jake Arrieta | 1.71 | 2020 | ||
| 5 | Matt Harrison | 1.57 | 2012 | ||
| 6 | A.J. Burnett | 1.56 | 2016 | ||
| 7 | C.C. Sabathia | 1.54 | 2002 | ||
| 8 | Kevin Gausman | 1.54 | 2018 | ||
| 9 | Reynaldo Lopez | 1.54 | 2018 | ||
| 10 | Ted Lilly | 1.52 | 2009 | ||
| 11 | Tim Redding | 1.51 | 2004 | ||
| 12 | Greg Maddux | 1.50 | 1990 | ||
| 13 | Lance Lynn | 1.50 | 2013 | ||
| 14 | David Cone | 1.48 | 1998 | ||
| 15 | Gil Heredia | 1.48 | 2001 | ||
| 16 | Jeff Fassero | 1.47 | 1998 | ||
| 17 | Pete Harnisch | 1.47 | 2000 | ||
| 18 | Andy Pettitte | 1.47 | 2001 | ||
| 19 | Andy Pettitte | 1.47 | 2002 | ||
| 20 | Tyler Skaggs | 1.47 | 2019 | ||
| 21 | David Cone | 1.45 | 1994 | ||
| 22 | Jose DeJesus | 1.45 | 1992 | ||
| 23 | Andy Pettitte | 1.45 | 1999 | ||
| 24 | Jose Guzman | 1.43 | 1992 | ||
| 25 | Jamie Moyer | 1.43 | 2002 | ||