| Starter | Tm | Tier | Game |
|---|---|---|---|
| Patrick Corbin | WAS | -7.12 | 202109230_WAS_CIN |
| Keegan Akin | BAL | -4.54 | 202109220_BAL_PHI |
| Griffin Jax | MIN | -2.44 | 202109210_MIN_CHN |
| Mitch Keller | PIT | -2.31 | 202109210_PIT_CIN |
| Vince Velasquez | SDN | -2.08 | 202109220_SFN_SDN |
Based on accumulated WAA for this season up to 2021-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.09 | Max Scherzer | 174 | TOT |
| +003+ | 7.42 | Walker Buehler | 195.7 | LAN |
| +006+ | 7.01 | Zack Wheeler | 206.3 | PHI |
| +009+ | 6.86 | Brandon Woodruff | 175.3 | MIL |
| +010+ | 6.85 | Corbin Burnes | 158 | MIL |
| +011+ | 6.72 | Robbie Ray | 182 | TOR |
| +012+ | 6.28 | Lance Lynn | 146 | CHA |
| +017+ | 5.58 | Adam Wainwright | 200.3 | SLN |
| +019+ | 5.56 | Marcus Stroman | 174 | NYN |
| +020+ | 5.56 | Ranger Suarez | 90 | PHI |
| +022+ | 5.49 | Carlos Rodon | 127.7 | CHA |
| +023+ | 5.45 | Sandy Alcantara | 194.7 | MIA |
| +029+ | 5.17 | Kevin Gausman | 179 | SFN |
| +032+ | 4.99 | Freddy Peralta | 139 | MIL |
| +033+ | 4.92 | Cal Quantrill | 143.7 | CLE |
| +035+ | 4.83 | Gerrit Cole | 169.3 | NYA |
| +039+ | 4.72 | Trevor Rogers | 128 | MIA |
| +048+ | 4.31 | Julio Urias | 174.3 | LAN |
| +053+ | 4.15 | Joe Musgrove | 171.3 | SDN |
| +064+ | 3.76 | Chris Bassitt | 154 | OAK |
| +068+ | 3.67 | Lance McCullers | 156.3 | HOU |
| +069+ | 3.64 | John Means | 138.7 | BAL |
| +073+ | 3.55 | Logan Webb | 136.3 | SFN |
| +076+ | 3.44 | Jose Berrios | 180 | TOT |
| +078+ | 3.41 | Anthony DeSclafani | 158.7 | SFN |
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