| Starter | Tm | Tier | Game |
|---|---|---|---|
| Patrick Corbin | WAS | -6.44 | 202109120_WAS_PIT |
| J.A. Happ | SLN | -6.38 | 202109120_CIN_SLN |
| Keegan Akin | BAL | -4.62 | 202109112_TOR_BAL |
| Wil Crowe | PIT | -2.62 | 202109110_WAS_PIT |
| Zach Davies | CHN | -1.85 | 202109110_SFN_CHN |
Based on accumulated WAA for this season up to 2021-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.15 | Walker Buehler | 186 | LAN |
| +002+ | 7.99 | Max Scherzer | 162 | TOT |
| +006+ | 6.89 | Corbin Burnes | 152 | MIL |
| +008+ | 6.52 | Brandon Woodruff | 163.3 | MIL |
| +010+ | 6.37 | Robbie Ray | 170.3 | TOR |
| +011+ | 6.35 | Zack Wheeler | 195.3 | PHI |
| +012+ | 6.1 | Adam Wainwright | 190.3 | SLN |
| +013+ | 5.99 | Kevin Gausman | 170 | SFN |
| +014+ | 5.89 | Lance Lynn | 140.7 | CHA |
| +015+ | 5.73 | Marcus Stroman | 163 | NYN |
| +017+ | 5.55 | Carlos Rodon | 124.7 | CHA |
| +020+ | 5.46 | Gerrit Cole | 158.7 | NYA |
| +023+ | 5.21 | Ranger Suarez | 78 | PHI |
| +026+ | 5.08 | Sandy Alcantara | 188.7 | MIA |
| +030+ | 4.75 | Wade Miley | 155.7 | CIN |
| +034+ | 4.65 | Joe Musgrove | 159.7 | SDN |
| +037+ | 4.49 | Julio Urias | 163.3 | LAN |
| +039+ | 4.44 | Freddy Peralta | 127 | MIL |
| +042+ | 4.22 | Trevor Rogers | 118.7 | MIA |
| +062+ | 3.76 | Logan Webb | 125.3 | SFN |
| +067+ | 3.68 | Cal Quantrill | 130.3 | CLE |
| +066+ | 3.68 | Collin McHugh | 57.7 | TBA |
| +068+ | 3.58 | Lance McCullers | 144.3 | HOU |
| +072+ | 3.47 | Chris Bassitt | 151 | OAK |
| +077+ | 3.22 | Kyle Gibson | 160 | TOT |
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