| 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 2020-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.82 | Shane Bieber | 52.7 | CLE |
| +003+ | 3.51 | Yu Darvish | 50 | CHN |
| +004+ | 3.11 | Zac Gallen | 50 | ARI |
| +005+ | 3.08 | Max Fried | 45 | ATL |
| +007+ | 2.7 | Trevor Bauer | 44 | CIN |
| +008+ | 2.64 | Jacob deGrom | 41 | NYN |
| +011+ | 2.47 | Zach Davies | 48.3 | SDN |
| +013+ | 2.4 | Zack Wheeler | 45 | PHI |
| +015+ | 2.36 | Lance Lynn | 57.3 | TEX |
| +016+ | 2.35 | Clayton Kershaw | 36 | LAN |
| +017+ | 2.24 | Dylan Bundy | 50.7 | ANA |
| +018+ | 2.22 | Dallas Keuchel | 48.3 | CHA |
| +020+ | 2.08 | Aaron Nola | 44 | PHI |
| +021+ | 2 | Kenta Maeda | 42.7 | MIN |
| +025+ | 1.91 | Kwang Hyun Kim | 21.7 | SLN |
| +026+ | 1.88 | Dinelson Lamet | 44.7 | SDN |
| +027+ | 1.87 | Zach Plesac | 27 | CLE |
| +030+ | 1.86 | Hyun Jin Ryu | 43 | TOR |
| +033+ | 1.82 | Corbin Burnes | 38.3 | MIL |
| +034+ | 1.8 | Framber Valdez | 45.3 | HOU |
| +040+ | 1.7 | Brad Keller | 28 | KCA |
| +041+ | 1.68 | Randy Dobnak | 39.7 | MIN |
| +045+ | 1.56 | Tony Gonsolin | 17.7 | LAN |
| +046+ | 1.56 | Matt Wisler | 18.7 | MIN |
| +047+ | 1.55 | Adam Wainwright | 34 | SLN |
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