| Starter | Tm | Tier | Game |
|---|---|---|---|
| Zack Godley | BOS | -5.41 | 202009041_TOR_BOS |
| Jorge Lopez | BAL | -2.98 | 202009042_NYA_BAL |
| Rick Porcello | NYN | -2.83 | 202009040_PHI_NYN |
| Matthew Boyd | DET | -2.15 | 202009041_DET_MIN |
| Luke Weaver | ARI | -2.11 | 202009030_ARI_LAN |
Based on accumulated WAA for this season up to 2020-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.82 | Shane Bieber | 52.7 | CLE |
| +002+ | 3.59 | Yu Darvish | 50 | CHN |
| +005+ | 3.12 | Zac Gallen | 50 | ARI |
| +006+ | 2.98 | Max Fried | 50 | ATL |
| +008+ | 2.69 | Trevor Bauer | 44 | CIN |
| +011+ | 2.48 | Zach Davies | 48.3 | SDN |
| +013+ | 2.41 | Zack Wheeler | 45 | PHI |
| +014+ | 2.37 | Lance Lynn | 57.3 | TEX |
| +016+ | 2.35 | Clayton Kershaw | 36 | LAN |
| +017+ | 2.3 | Dylan Bundy | 50.7 | ANA |
| +019+ | 2.23 | Dallas Keuchel | 48.3 | CHA |
| +020+ | 2.1 | Aaron Nola | 44 | PHI |
| +021+ | 2 | Kenta Maeda | 48.7 | MIN |
| +022+ | 1.95 | Tony Gonsolin | 23.7 | LAN |
| +023+ | 1.93 | Kwang Hyun Kim | 21.7 | SLN |
| +025+ | 1.89 | Dinelson Lamet | 44.7 | SDN |
| +027+ | 1.87 | Hyun Jin Ryu | 43 | TOR |
| +028+ | 1.87 | Framber Valdez | 45.3 | HOU |
| +026+ | 1.87 | Zach Plesac | 27 | CLE |
| +031+ | 1.86 | Adam Wainwright | 40.3 | SLN |
| +032+ | 1.83 | Corbin Burnes | 38.3 | MIL |
| +044+ | 1.68 | Randy Dobnak | 39.7 | MIN |
| +049+ | 1.56 | Matt Wisler | 18.7 | MIN |
| +051+ | 1.55 | Zack Greinke | 46.3 | HOU |
| +055+ | 1.46 | Sonny Gray | 42.3 | CIN |
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