| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Foltynewicz | TEX | -4.87 | 202108060_TEX_OAK |
| Jorge Lopez | BAL | -3.74 | 202108080_TBA_BAL |
| Mitch Keller | PIT | -2.66 | 202108070_PIT_CIN |
| Patrick Corbin | WAS | -2.64 | 202108080_WAS_ATL |
| Brad Keller | KCA | -2.4 | 202108070_KCA_SLN |
Based on accumulated WAA for this season up to 2021-08-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.13 | Walker Buehler | 147.7 | LAN |
| +005+ | 6.55 | Zack Wheeler | 156 | PHI |
| +006+ | 6.05 | Brandon Woodruff | 137.3 | MIL |
| +007+ | 5.94 | Lance Lynn | 114.7 | CHA |
| +009+ | 5.61 | Kevin Gausman | 132.3 | SFN |
| +012+ | 5.07 | Freddy Peralta | 114 | MIL |
| +015+ | 4.82 | Carlos Rodon | 109.7 | CHA |
| +017+ | 4.55 | Corbin Burnes | 113 | MIL |
| +019+ | 4.46 | Marcus Stroman | 127.3 | NYN |
| +020+ | 4.4 | Trevor Rogers | 110 | MIA |
| +024+ | 4.24 | Max Scherzer | 118 | TOT |
| +026+ | 4.13 | Kyle Gibson | 125.7 | TOT |
| +025+ | 4.13 | Robbie Ray | 130.3 | TOR |
| +032+ | 3.87 | Wade Miley | 121 | CIN |
| +039+ | 3.61 | Joe Musgrove | 122.3 | SDN |
| +041+ | 3.48 | Ranger Suarez | 46 | PHI |
| +051+ | 3.22 | John Means | 93.7 | BAL |
| +052+ | 3.22 | Chris Bassitt | 144 | OAK |
| +053+ | 3.08 | Jose Berrios | 133.7 | TOT |
| +070+ | 2.69 | Aaron Loup | 37 | NYN |
| +069+ | 2.69 | German Marquez | 136.7 | COL |
| +073+ | 2.62 | Sean Manaea | 127 | OAK |
| +078+ | 2.53 | Shohei Ohtani | 86 | ANA |
| +082+ | 2.51 | Anthony DeSclafani | 126.3 | SFN |
| +083+ | 2.5 | Danny Duffy | 61 | KCA |
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