| Starter | Tm | Tier | Game |
|---|---|---|---|
| Patrick Corbin | WAS | -5.66 | 202109280_WAS_COL |
| Jesus Luzardo | MIA | -5.12 | 202109260_MIA_TBA |
| Griffin Jax | MIN | -3.12 | 202109260_TOR_MIN |
| Jackson Kowar | KCA | -2.35 | 202109270_KCA_CLE |
| Michael Wacha | TBA | -2.25 | 202109280_TBA_HOU |
Based on accumulated WAA for this season up to 2021-09-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.09 | Walker Buehler | 202.7 | LAN |
| +002+ | 8.07 | Max Scherzer | 174 | TOT |
| +004+ | 7.31 | Corbin Burnes | 165 | MIL |
| +005+ | 7.25 | Zack Wheeler | 213.3 | PHI |
| +006+ | 7.08 | Robbie Ray | 188 | TOR |
| +010+ | 6.82 | Brandon Woodruff | 179.3 | MIL |
| +012+ | 6.44 | Ranger Suarez | 99 | PHI |
| +018+ | 5.77 | Adam Wainwright | 206.3 | SLN |
| +020+ | 5.59 | Lance Lynn | 152 | CHA |
| +021+ | 5.55 | Marcus Stroman | 179 | NYN |
| +022+ | 5.51 | Kevin Gausman | 185 | SFN |
| +023+ | 5.46 | Carlos Rodon | 127.7 | CHA |
| +024+ | 5.34 | Sandy Alcantara | 200.7 | MIA |
| +032+ | 4.95 | Trevor Rogers | 133 | MIA |
| +034+ | 4.87 | Cal Quantrill | 149.7 | CLE |
| +037+ | 4.78 | Julio Urias | 179.3 | LAN |
| +039+ | 4.75 | Gerrit Cole | 175.3 | NYA |
| +044+ | 4.66 | Freddy Peralta | 144.3 | MIL |
| +055+ | 4.19 | Max Fried | 158.7 | ATL |
| +059+ | 4.09 | Joe Musgrove | 176.3 | SDN |
| +060+ | 4.02 | Logan Webb | 141.3 | SFN |
| +066+ | 3.87 | Chris Bassitt | 157.3 | OAK |
| +074+ | 3.67 | Lance McCullers | 156.3 | HOU |
| +075+ | 3.66 | Charlie Morton | 183 | ATL |
| +077+ | 3.6 | Framber Valdez | 129.7 | HOU |
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