| Starter | Tm | Tier | Game |
|---|---|---|---|
| Patrick Corbin | WAS | -5.39 | 202109180_COL_WAS |
| Keegan Akin | BAL | -4.2 | 202109170_BAL_BOS |
| Wil Crowe | PIT | -2.66 | 202109170_PIT_MIA |
| Zach Davies | CHN | -2.54 | 202109170_CHN_MIL |
| Ryan Yarbrough | TBA | -2.08 | 202109180_DET_TBA |
Based on accumulated WAA for this season up to 2021-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.66 | Max Scherzer | 169 | TOT |
| +002+ | 8.11 | Walker Buehler | 192 | LAN |
| +007+ | 6.84 | Corbin Burnes | 158 | MIL |
| +006+ | 6.84 | Robbie Ray | 177.3 | TOR |
| +009+ | 6.62 | Zack Wheeler | 200.3 | PHI |
| +011+ | 6.47 | Brandon Woodruff | 169.3 | MIL |
| +012+ | 6.23 | Adam Wainwright | 196.3 | SLN |
| +013+ | 6.2 | Lance Lynn | 146 | CHA |
| +015+ | 5.86 | Marcus Stroman | 169 | NYN |
| +017+ | 5.73 | Gerrit Cole | 163.7 | NYA |
| +020+ | 5.6 | Kevin Gausman | 175 | SFN |
| +021+ | 5.54 | Carlos Rodon | 124.7 | CHA |
| +022+ | 5.38 | Ranger Suarez | 84 | PHI |
| +028+ | 5.08 | Sandy Alcantara | 188.7 | MIA |
| +030+ | 5.02 | Freddy Peralta | 133 | MIL |
| +035+ | 4.63 | Joe Musgrove | 165.7 | SDN |
| +037+ | 4.56 | Julio Urias | 168.3 | LAN |
| +042+ | 4.41 | Trevor Rogers | 122.7 | MIA |
| +043+ | 4.39 | Cal Quantrill | 137 | CLE |
| +051+ | 4.13 | Wade Miley | 160 | CIN |
| +056+ | 3.99 | Logan Webb | 132.3 | SFN |
| +062+ | 3.77 | Collin McHugh | 58.7 | TBA |
| +064+ | 3.73 | Lance McCullers | 150.3 | HOU |
| +072+ | 3.47 | Chris Bassitt | 151 | OAK |
| +075+ | 3.38 | Jose Berrios | 173.3 | TOT |
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