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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Sonny Gray# | .1692 | 1999 | |
| 2 | Jhoan Duran# | .1964 | 1996 | |
| 3 | Bruce Howard# | .2019 | 1990 | |
| 4 | Paul Moskau | .2037 | 1986 | |
| 5 | Blake Snell# | .2077 | 1996 | |
| 6 | Mickey Lolich# | .2115 | 1988 | |
| 7 | Mike King | .2150 | 1982 | |
| 8 | Hiroki Kuroda# | .2188 | 1995 | |
| 9 | Kip Wells# | .2222 | 1990 | |
| 10 | Len Barker | .2240 | 1980 | |
| 11 | Bob Anderson | .2241 | 1996 | |
| 12 | Mark Langston* | .2299 | 1989 | |
| 13 | Les Tietje | .2321 | 1984 | |
| 14 | Jhoan Duran# | .2333 | 1989 | |
| 15 | Freddie Toliver | .2344 | 1984 | |
| 16 | Bob Anderson | .2364 | 1991 | |
| 17 | Peter Moylan | .2424 | 1982 | |
| 18 | Bob Friend | .2459 | 1988 | |
| 19 | Mike Nagy# | .2532 | 1995 | |
| 20 | Carl Hubbell# | .2545 | 1997 | |
| 21 | Mark Hendrickson | .2581 | 1980 | |
| 22 | Jhoan Duran# | .2593 | 1988 | |
| 23 | Atley Donald | .2614 | 1989 | |
| 24 | Walker Buehler# | .2632 | 1988 | |
| 25 | Bill Lee# | .2637 | 1992 | |
| 26 | Mike Trombley | .2656 | 1981 | |
| 27 | Joe Krakauskas | .2667 | 1984 | |
| 28 | Aaron Small# | .2687 | 1994 | |
| 29 | Tommy Boggs# | .2740 | 1998 | |
| 30 | Sam McDowell | .2759 | 1993 | |
| 30 | Jhoan Duran# | .2759 | 1998 | |
| 32 | Joe Coleman | .2766 | 1982 | |
| 33 | Chris Hatcher# | .2778 | 1995 | |
| 33 | Foster Edwards# | .2778 | 1994 | |
| 35 | Robbie Ray | .2781 | 1987 | |
| 36 | Doug Rau# | .2782 | 1998 | |
| 37 | Kevin Ritz# | .2787 | 1999 | |
| 38 | Joe Coleman# | .2796 | 1998 | |
| 39 | Shawn Chacon# | .2800 | 1991 | |
| 40 | Bob Anderson | .2857 | 1988 | |
| 41 | Robbie Ray | .2869 | 1983 | |
| 42 | Tom Glavine | .2879 | 1981 | |
| 43 | Blake Stein | .2881 | 1985 | |
| 44 | Kyle Lohse# | .2892 | 1993 | |
| 45 | Omar Olivares | .2911 | 1985 | |
| 46 | Ray Bare# | .2913 | 1990 | |
| 47 | Joe Moeller# | .2923 | 1994 | |
| 48 | Kevin Ritz# | .2931 | 1997 | |
| 48 | Phil Niekro | .2931 | 1991 | |
| 50 | Barry Zito | .2937 | 1985 | |
| 51 | Jack Sanford# | .2951 | 1996 | |
| 52 | Ray Bare# | .2955 | 1994 | |
| 53 | Phil Niekro | .2958 | 1990 | |
| 54 | Greg Minton | .2963 | 1992 | |
| 55 | Dean Chance# | .2969 | 2000 | |
| 56 | John Candelaria# | .2977 | 1989 | |
| 57 | La Marr Hoyt# | .2978 | 1989 | |
| 58 | Bill Gullickson# | .2981 | 1993 | |
| 59 | Robbie Ray | .2982 | 1988 | |
| 60 | Joey Hamilton# | .3000 | 1998 | |
| 60 | Bill Lee# | .3000 | 1993 | |
| 60 | Tony Saunders# | .3000 | 1988 | |
| 63 | Ed Hanyzewski# | .3011 | 1999 | |
| 64 | Walker Buehler# | .3014 | 1991 | |
| 65 | Bob Anderson | .3019 | 1992 | |
| 66 | Robbie Ray | .3026 | 1984 | |
| 67 | Mike Flanagan# | .3036 | 1997 | |
| 68 | Paul Moskau | .3051 | 1982 | |
| 69 | Don Schwall | .3053 | 1980 | |
| 70 | Paul Erickson# | .3058 | 1999 | |
| 71 | Mike Nagy# | .3067 | 1994 | |
| 72 | Tommy Hunter | .3069 | 1989 | |
| 73 | Scott Sanderson | .3077 | 1987 | |
| 74 | Sam McDowell | .3082 | 1992 | |
| 75 | Chris Holt# | .3083 | 1997 | |
| 76 | Ian Snell | .3091 | 1981 | |
| 77 | Ed Hanyzewski# | .3095 | 1996 | |
| 78 | Hiroki Kuroda# | .3101 | 1998 | |
| 79 | Ricky Romero# | .3107 | 1992 | |
| 79 | Bobby Shantz | .3107 | 1993 | |
| 81 | Bobby Shantz | .3125 | 1990 | |
| 82 | Art Ceccarelli | .3143 | 1982 | |
| 83 | Red Witt# | .3148 | 1991 | |
| 84 | Kenta Maeda | .3154 | 1984 | |
| 85 | Chris Capuano | .3158 | 1994 | |
| 85 | Phil Niekro | .3158 | 1989 | |
| 87 | John Miller# | .3172 | 1991 | |
| 88 | John Miller# | .3188 | 1988 | |
| 89 | Red Witt# | .3206 | 1994 | |
| 90 | Vern Geishert | .3214 | 1982 | |
| 90 | Roy Oswalt# | .3214 | 1996 | |
| 92 | Red Munger# | .3239 | 1996 | |
| 93 | Phil Niekro | .3256 | 1985 | |
| 94 | Rollie Sheldon | .3276 | 1986 | |
| 95 | John Axford# | .3279 | 1995 | |
| 96 | Vern Olsen# | .3289 | 1998 | |
| 97 | Earl Francis# | .3293 | 1997 | |
| 98 | Mike Adams | .3308 | 1980 | |
| 99 | Jim Merritt | .3333 | 1980 | |
| 99 | Blake Snell# | .3333 | 1992 |
