| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Harvey | BAL | -9.24 | 202106250_BAL_TOR |
| Carlos Martinez | SLN | -3.66 | 202106240_PIT_SLN |
| Jose Urena | DET | -2.21 | 202106240_HOU_DET |
| Mike Foltynewicz | TEX | -1.94 | 202106230_OAK_TEX |
| Brad Keller | KCA | -1.79 | 202106240_KCA_NYA |
Based on accumulated WAA for this season up to 2021-06-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.23 | Jacob deGrom | 72 | NYN |
| +003+ | 5.77 | Kevin Gausman | 96.7 | SFN |
| +005+ | 4.74 | Brandon Woodruff | 95 | MIL |
| +006+ | 4.13 | Zack Wheeler | 99.3 | PHI |
| +008+ | 4.07 | Gerrit Cole | 96.7 | NYA |
| +010+ | 4 | Trevor Rogers | 86.7 | MIA |
| +011+ | 3.93 | Carlos Rodon | 78.7 | CHA |
| +012+ | 3.87 | Max Scherzer | 82.3 | WAS |
| +015+ | 3.79 | Marcus Stroman | 85.7 | NYN |
| +016+ | 3.7 | Kyle Gibson | 83 | TEX |
| +017+ | 3.69 | Walker Buehler | 96.7 | LAN |
| +018+ | 3.64 | Freddy Peralta | 81 | MIL |
| +019+ | 3.64 | Lance Lynn | 75.7 | CHA |
| +020+ | 3.61 | Joe Musgrove | 85 | SDN |
| +023+ | 3.54 | Trevor Bauer | 101.7 | LAN |
| +027+ | 3.24 | Yu Darvish | 90 | SDN |
| +029+ | 3.21 | Taijuan Walker | 84 | NYN |
| +030+ | 3.16 | John Means | 71 | BAL |
| +037+ | 2.73 | Pablo Lopez | 91 | MIA |
| +039+ | 2.68 | Tyler Glasnow | 88 | TBA |
| +040+ | 2.66 | Sandy Alcantara | 101.3 | MIA |
| +041+ | 2.62 | Corbin Burnes | 74.7 | MIL |
| +042+ | 2.61 | Anthony DeSclafani | 87.7 | SFN |
| +045+ | 2.55 | Sean Manaea | 92.7 | OAK |
| +050+ | 2.46 | Danny Duffy | 44.7 | KCA |
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