| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jacob deGrom | NYN | 11.6 | 202009160_NYN_PHI |
| Gerrit Cole | NYA | 7.31 | 202009160_TOR_NYA |
| Aaron Nola | PHI | 5.89 | 202009170_NYN_PHI |
| Shane Bieber | CLE | 5.45 | 202009170_CLE_DET |
| Jack Flaherty | SLN | 2.79 | 202009150_SLN_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matthew Boyd | DET | -3.53 | 202009150_KCA_DET |
| Rick Porcello | NYN | -3.4 | 202009150_NYN_PHI |
| Jordan Lyles | TEX | -2.62 | 202009170_TEX_HOU |
| Austin Voth | WAS | -2.19 | 202009160_WAS_TBA |
| Jakob Junis | KCA | -1.43 | 202009150_KCA_DET |
Based on accumulated WAA for this season up to 2020-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.39 | Shane Bieber | 72.3 | CLE |
| +002+ | 4.01 | Trevor Bauer | 58 | CIN |
| +005+ | 3.84 | Yu Darvish | 63 | CHN |
| +007+ | 3.49 | Lance Lynn | 71.3 | TEX |
| +009+ | 3.23 | Dinelson Lamet | 59.3 | SDN |
| +011+ | 3.15 | Jacob deGrom | 56 | NYN |
| +012+ | 2.9 | Kenta Maeda | 60.7 | MIN |
| +014+ | 2.88 | Corbin Burnes | 50 | MIL |
| +017+ | 2.72 | Zack Wheeler | 58.3 | PHI |
| +019+ | 2.64 | Gerrit Cole | 66 | NYA |
| +022+ | 2.49 | Brad Keller | 43.7 | KCA |
| +021+ | 2.49 | Zach Davies | 60.3 | SDN |
| +024+ | 2.45 | Aaron Nola | 61.7 | PHI |
| +028+ | 2.34 | Adam Wainwright | 53.3 | SLN |
| +029+ | 2.32 | Tony Gonsolin | 35.7 | LAN |
| +030+ | 2.26 | Luis Castillo | 59.3 | CIN |
| +033+ | 2.24 | Clayton Kershaw | 47.3 | LAN |
| +038+ | 2.05 | Zach Plesac | 41 | CLE |
| +044+ | 1.84 | Dylan Bundy | 60.7 | ANA |
| +048+ | 1.83 | Zac Gallen | 60 | ARI |
| +052+ | 1.81 | Kyle Hendricks | 65.7 | CHN |
| +053+ | 1.8 | Dakota Hudson | 39 | SLN |
| +056+ | 1.78 | Dustin May | 47 | LAN |
| +057+ | 1.76 | Hyun Jin Ryu | 54 | TOR |
| +074+ | 1.56 | Antonio Senzatela | 62.7 | COL |
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