| Career - Worst WHIP | |||
| Rk | Player Name | Totals | |
| 1 | Ron Darling | 1.79 | |
| 2 | Jose Quintana | 1.60 | |
| 3 | Todd Stottlemyre | 1.58 | |
| 4 | Ricky Bones | 1.56 | |
| 5 | Jason Schmidt | 1.55 | |
| 6 | Frank Viola | 1.55 | |
| 7 | Wilson Alvarez | 1.54 | |
| 8 | Kent Bottenfield | 1.54 | |
| 9 | Barry Zito | 1.51 | |
| 10 | Jon Lieber | 1.47 | |
| 11 | Nathan Eovaldi | 1.47 | |
| 12 | Jaime Navarro | 1.44 | |
| 13 | Daisuke Matsuzaka | 1.44 | |
| 14 | Brandon McCarthy | 1.43 | |
| 15 | German Marquez | 1.43 | |
| 16 | Tyler Mahle | 1.41 | |
| 17 | Jason Hammel | 1.40 | |
| 18 | Greg Maddux | 1.39 | |
| 19 | Freddy Garcia | 1.38 | |
| 20 | Rick Porcello | 1.36 | |
| 21 | Lucas Giolito | 1.35 | |
| 22 | James Shields | 1.33 | |
| 23 | DENNIS MARTINEZ | 1.32 | |
| 24 | Dan Haren | 1.31 | |
| 25 | Javier Vazquez | 1.29 | |
| Single Season - Worst WHIP | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Frank Viola | 2.10 | 1994 | ||
| 2 | Wilson Alvarez | 2.02 | 1994 | ||
| 3 | Jim Deshaies | 1.96 | 1991 | ||
| 4 | Randy Johnson | 1.94 | 1990 | ||
| 5 | Ron Darling | 1.84 | 1994 | ||
| 6 | Jaime Navarro | 1.73 | 1994 | ||
| 7 | Ricky Bones | 1.68 | 1996 | ||
| 8 | Amaury Telemaco | 1.68 | 1999 | ||
| 9 | Wilson Alvarez | 1.67 | 2000 | ||
| 10 | Mike Sirotka | 1.65 | 2001 | ||
| 11 | Frank Viola | 1.65 | 1990 | ||
| 12 | Yovani Gallardo | 1.64 | 2013 | ||
| 13 | Tom Glavine | 1.63 | 2008 | ||
| 14 | Jon Lieber | 1.60 | 2000 | ||
| 15 | Wilson Alvarez | 1.60 | 1999 | ||
| 16 | Brett Tomko | 1.58 | 2006 | ||
| 17 | Brad Radke | 1.58 | 2007 | ||
| 18 | Wilson Alvarez | 1.57 | 1996 | ||
| 19 | Todd Stottlemyre | 1.57 | 1996 | ||
| 20 | Barry Zito | 1.57 | 2007 | ||
| 21 | Freddy Garcia | 1.56 | 2001 | ||
| 22 | Todd Stottlemyre | 1.55 | 1999 | ||
| 23 | Brett Cecil | 1.55 | 2011 | ||
| 24 | Jose Quintana | 1.55 | 2018 | ||
| 25 | Jason Schmidt | 1.54 | 2007 | ||