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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Shane Bieber# | .1569 | 2024 | |
| 2 | Jordan Romano# | .1837 | 2024 | |
| 3 | Kevin Gausman# | .2373 | 2023 | |
| 4 | Dustin May# | .2414 | 2021 | |
| 5 | Tanner Houck# | .2500 | 2022 | |
| 5 | Justin Verlander# | .2500 | 2022 | |
| 5 | Carlos Rodon# | .2500 | 2023 | |
| 8 | Trevor Rogers# | .2651 | 2022 | |
| 9 | Aaron Nola# | .2899 | 2023 | |
| 10 | Trevor [UNRATED] Bauer | .2990 | 2022 | |
| 11 | Max Fried# | .3092 | 2024 | |
| 12 | George Kirby# | .3118 | 2024 | |
| 13 | Logan Gilbert# | .3158 | 2023 | |
| 14 | Julio [UNRATED] Urias# | .3303 | 2021 | |
| 15 | Corbin Burnes# | .3441 | 2022 | |
| 16 | Robbie Ray# | .3444 | 2022 | |
| 17 | Brandon Woodruff# | .3488 | 2023 | |
| 18 | Patrick Sandoval# | .3521 | 2024 | |
| 19 | Zac Gallen# | .3581 | 2024 | |
| 20 | Shohei Ohtani# | .3590 | 2023 | |
| 21 | Hyun-jin [UNRATED] Ryu# | .3636 | 2022 | |
| 21 | Max Scherzer# | .3636 | 2023 | |
| 23 | Lucas Giolito# | .3714 | 2021 | |
| 24 | Noah Syndergaard# | .3740 | 2022 | |
| 25 | Gerrit Cole# | .3818 | 2023 | |
| 26 | Max Scherzer# | .3855 | 2021 | |
| 27 | Tyler Anderson# | .3958 | 2021 | |
| 28 | Robbie Ray# | .4070 | 2021 | |
| 29 | Logan Webb# | .4133 | 2023 | |
| 30 | Shane Bieber# | .4175 | 2022 | |
| 31 | Sandy Alcantara# | .4301 | 2023 | |
| 32 | Chris Bassitt# | .4328 | 2023 | |
| 33 | Zac Gallen# | .4412 | 2023 | |
| 34 | Marco Gonzales# | .4444 | 2021 | |
| 35 | Joe Musgrove# | .4471 | 2024 | |
| 36 | Yusei Kikuchi# | .4561 | 2021 | |
| 37 | German Marquez# | .4762 | 2021 | |
| 38 | George Kirby# | .4776 | 2023 | |
| 39 | Frankie Montas# | .4853 | 2024 | |
| 40 | Julio [UNRATED] Urias# | .4874 | 2022 | |
| 41 | Shane McClanahan# | .4950 | 2024 | |
| 42 | Walker Buehler# | .5000 | 2022 | |
| 43 | Marcus Stroman# | .5070 | 2021 | |
| 44 | Wade Miley# | .5077 | 2022 | |
| 45 | Charlie Morton# | .5082 | 2024 | |
| 46 | Jordan Montgomery# | .5227 | 2024 | |
| 47 | Triston McKenzie# | .5538 | 2024 | |
| 48 | Shane Bieber# | .5618 | 2021 | |
| 49 | Zach Plesac# | .5867 | 2022 |
