| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jorge Lopez | BAL | -5.23 | 202108020_BAL_NYA |
| Mike Foltynewicz | TEX | -5.08 | 202108010_SEA_TEX |
| Patrick Corbin | WAS | -2.57 | 202108030_PHI_WAS |
| Mitch Keller | PIT | -2.52 | 202108010_PHI_PIT |
| Brad Keller | KCA | -2.09 | 202108010_KCA_TOR |
Based on accumulated WAA for this season up to 2021-08-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.78 | Walker Buehler | 141.7 | LAN |
| +006+ | 5.72 | Brandon Woodruff | 131.3 | MIL |
| +007+ | 5.69 | Zack Wheeler | 147 | PHI |
| +008+ | 5.59 | Lance Lynn | 108.7 | CHA |
| +009+ | 5.28 | Kevin Gausman | 126.3 | SFN |
| +012+ | 4.94 | Freddy Peralta | 108 | MIL |
| +018+ | 4.38 | Trevor Rogers | 110 | MIA |
| +020+ | 4.35 | Marcus Stroman | 122.3 | NYN |
| +019+ | 4.35 | Carlos Rodon | 104.7 | CHA |
| +022+ | 4.12 | Corbin Burnes | 106 | MIL |
| +024+ | 3.98 | Max Scherzer | 111 | WAS |
| +030+ | 3.75 | Kyle Gibson | 119.7 | TOT |
| +034+ | 3.52 | Robbie Ray | 124.3 | TOR |
| +036+ | 3.41 | Gerrit Cole | 130.3 | NYA |
| +040+ | 3.24 | Joe Musgrove | 116.3 | SDN |
| +041+ | 3.23 | Ranger Suarez | 43.3 | PHI |
| +042+ | 3.22 | Sandy Alcantara | 132.7 | MIA |
| +046+ | 3.2 | Wade Miley | 114 | CIN |
| +053+ | 2.97 | Hyun Jin Ryu | 123 | TOR |
| +054+ | 2.94 | John Means | 88.7 | BAL |
| +062+ | 2.8 | Chris Bassitt | 137 | OAK |
| +065+ | 2.73 | Lance McCullers | 104.3 | HOU |
| +066+ | 2.71 | Jose Berrios | 127.7 | TOT |
| +070+ | 2.67 | Sean Manaea | 127 | OAK |
| +072+ | 2.55 | Anthony DeSclafani | 126.3 | SFN |
_