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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Mickey Lolich# | 0.56 | 1988 | |
| 2 | Jhoan Duran# | 0.65 | 1996 | |
| 3 | Jhoan Duran# | 0.70 | 1988 | |
| 3 | Greg Minton | 0.70 | 1992 | |
| 5 | Tom Glavine | 0.72 | 1980 | |
| 5 | Hiroki Kuroda# | 0.72 | 1995 | |
| 7 | Jhoan Duran# | 0.77 | 1998 | |
| 8 | Dustin Hermanson# | 0.78 | 1995 | |
| 8 | Doug Rau# | 0.78 | 1998 | |
| 8 | Roy Oswalt# | 0.78 | 1989 | |
| 11 | Chris Hatcher# | 0.80 | 1995 | |
| 11 | Scott Sanderson | 0.80 | 1987 | |
| 13 | Carl Hubbell# | 0.81 | 1997 | |
| 14 | Bobby Shantz | 0.85 | 1993 | |
| 15 | Mike King | 0.86 | 1982 | |
| 15 | Bill Lee# | 0.86 | 1993 | |
| 15 | Robbie Ray | 0.86 | 1987 | |
| 18 | Mark Langston* | 0.87 | 1989 | |
| 19 | Walker Buehler# | 0.88 | 1988 | |
| 19 | Jhoan Duran# | 0.88 | 1989 | |
| 19 | Bob Anderson | 0.88 | 1996 | |
| 22 | Tommy Hunter | 0.89 | 1989 | |
| 22 | Henderson Alvarez III# | 0.89 | 2000 | |
| 24 | Aaron Small# | 0.90 | 1994 | |
| 25 | Freddie Toliver | 0.92 | 1984 | |
| 26 | Kyle Lohse# | 0.93 | 1993 | |
| 27 | John Axford# | 0.94 | 1995 | |
| 28 | Bill Lee# | 0.95 | 1992 | |
| 28 | Omar Olivares | 0.95 | 1982 | |
| 28 | La Marr Hoyt# | 0.95 | 1989 | |
| 28 | Vern Olsen# | 0.95 | 1998 | |
| 32 | Omar Olivares | 0.96 | 1985 | |
| 32 | Ray Bare# | 0.96 | 1994 | |
| 34 | Dizzy Dean# | 0.97 | 1996 | |
| 34 | Paul Erickson# | 0.97 | 1999 | |
| 34 | Len Barker | 0.97 | 1980 | |
| 34 | Sam McDowell | 0.97 | 1993 | |
| 34 | Joe Moeller# | 0.97 | 1994 | |
| 39 | Clay Carroll# | 0.98 | 2000 | |
| 39 | Jim Willis | 0.98 | 1985 | |
| 41 | Bobby Shantz | 0.99 | 1990 | |
| 41 | Luke Weaver# | 0.99 | 1992 | |
| 41 | Mike Ryba# | 0.99 | 1997 | |
| 44 | Roy Oswalt# | 1.00 | 1996 | |
| 44 | Blake Snell# | 1.00 | 1996 | |
| 44 | Dave Goltz# | 1.00 | 1990 | |
| 44 | Dean Chance# | 1.00 | 2000 | |
| 44 | Phil Niekro | 1.00 | 1990 | |
| 44 | Paul Moskau | 1.00 | 1986 | |
| 44 | Red Witt# | 1.00 | 1991 | |
| 44 | John Candelaria# | 1.00 | 1984 | |
| 44 | Tom Glavine | 1.00 | 1981 | |
| 44 | Robbie Ray | 1.00 | 1986 | |
| 54 | Bruce Howard# | 1.01 | 1990 | |
| 54 | Albie Lopez | 1.01 | 1985 | |
| 54 | Urbano Lugo | 1.01 | 1982 | |
| 54 | Bob Anderson | 1.01 | 1988 | |
| 58 | Walker Buehler# | 1.02 | 1991 | |
| 58 | Bobby Shantz | 1.02 | 1985 | |
| 58 | Mike Trombley | 1.02 | 1981 | |
| 58 | Phil Niekro | 1.02 | 1991 | |
| 58 | Bill Lee | 1.02 | 1988 | |
| 58 | Bob Anderson | 1.02 | 1992 | |
| 64 | Barry Zito | 1.03 | 1985 | |
| 64 | Hiroki Kuroda# | 1.03 | 1998 | |
| 64 | Joey Hamilton# | 1.03 | 1998 | |
| 64 | John Miller# | 1.03 | 1988 | |
| 68 | Scott Sanderson | 1.04 | 1989 | |
| 68 | Atley Donald | 1.04 | 1989 | |
| 68 | Daisuke Matsuzaka | 1.04 | 1989 | |
| 71 | Ray Bare# | 1.05 | 1990 | |
| 72 | Dustin Hermanson# | 1.06 | 1994 | |
| 72 | John Candelaria# | 1.06 | 1989 | |
| 74 | Mark Langston* | 1.07 | 1988 | |
| 74 | Bill Gullickson# | 1.07 | 1993 | |
| 74 | Chris Holt# | 1.07 | 1998 | |
| 74 | Omar Daal | 1.07 | 1986 | |
| 78 | Kevin Ritz# | 1.08 | 1999 | |
| 78 | Sonny Gray# | 1.08 | 1999 | |
| 80 | Blake Snell# | 1.10 | 1992 | |
| 80 | Don Nottebart | 1.10 | 1983 | |
| 80 | Mark Hendrickson | 1.10 | 1980 | |
| 80 | Zeke Spruill | 1.10 | 1981 | |
| 80 | Jim Willis | 1.10 | 1984 | |
| 80 | Ian Snell | 1.10 | 1981 | |
| 86 | Homer Bailey# | 1.11 | 1996 | |
| 87 | Phil Niekro | 1.12 | 1989 | |
| 87 | Chad Gaudin | 1.12 | 1988 | |
| 87 | Jim Willis | 1.12 | 1983 | |
| 87 | Joe Coleman | 1.12 | 1983 | |
| 87 | Daisuke Matsuzaka | 1.12 | 1987 | |
| 87 | Carl Hubbell# | 1.12 | 2000 | |
| 87 | Art Ceccarelli | 1.12 | 1982 | |
| 87 | Foster Edwards# | 1.12 | 1994 | |
| 87 | Ben Sheets# | 1.12 | 1986 | |
| 96 | Red Witt# | 1.13 | 1994 | |
| 96 | Paul Moskau | 1.13 | 1982 | |
| 96 | John Patterson | 1.13 | 1991 | |
| 96 | Jim Merritt | 1.13 | 1989 | |
| 96 | Mike LaCoss | 1.13 | 1989 |
