| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jesus Luzardo | MIA | -5 | 202110020_PHI_MIA |
| Mitch Keller | PIT | -3.49 | 202110030_CIN_PIT |
| Griffin Jax | MIN | -3.48 | 202110020_MIN_KCA |
| Jackson Kowar | KCA | -3.34 | 202110030_MIN_KCA |
| Jordan Lyles | TEX | -3.18 | 202110020_CLE_TEX |
Based on accumulated WAA for this season up to 2021-10-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.28 | Walker Buehler | 207.7 | LAN |
| +002+ | 7.46 | Max Scherzer | 179.3 | TOT |
| +005+ | 7.21 | Zack Wheeler | 213.3 | PHI |
| +006+ | 7.11 | Ranger Suarez | 106 | PHI |
| +009+ | 6.85 | Corbin Burnes | 167 | MIL |
| +010+ | 6.79 | Brandon Woodruff | 179.3 | MIL |
| +012+ | 6.47 | Robbie Ray | 193.3 | TOR |
| +017+ | 5.9 | Carlos Rodon | 132.7 | CHA |
| +018+ | 5.89 | Kevin Gausman | 192 | SFN |
| +019+ | 5.81 | Lance Lynn | 157 | CHA |
| +020+ | 5.71 | Adam Wainwright | 206.3 | SLN |
| +024+ | 5.59 | Marcus Stroman | 179 | NYN |
| +031+ | 5.11 | Julio Urias | 185.7 | LAN |
| +034+ | 5.04 | Sandy Alcantara | 205.7 | MIA |
| +037+ | 4.98 | Trevor Rogers | 133 | MIA |
| +042+ | 4.82 | Cal Quantrill | 149.7 | CLE |
| +047+ | 4.64 | Freddy Peralta | 144.3 | MIL |
| +048+ | 4.6 | Max Fried | 165.7 | ATL |
| +054+ | 4.33 | Joe Musgrove | 181.3 | SDN |
| +056+ | 4.23 | Gerrit Cole | 181.3 | NYA |
| +067+ | 3.85 | Collin McHugh | 64 | TBA |
| +068+ | 3.84 | Charlie Morton | 185.7 | ATL |
| +069+ | 3.84 | Chris Bassitt | 157.3 | OAK |
| +072+ | 3.79 | Logan Webb | 148.3 | SFN |
| +073+ | 3.77 | Lance McCullers | 162.3 | HOU |
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