| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Foltynewicz | TEX | -4.3 | 202107220_TEX_DET |
| Brad Keller | KCA | -2.61 | 202107210_KCA_MIL |
| Andrew Heaney | ANA | -2.04 | 202107220_ANA_MIN |
| Eli Morgan | CLE | -1.36 | 202107210_CLE_HOU |
| Trevor Williams | CHN | -1.33 | 202107200_CHN_SLN |
Based on accumulated WAA for this season up to 2021-07-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.93 | Jacob deGrom | 92 | NYN |
| +004+ | 6.3 | Kevin Gausman | 117.7 | SFN |
| +005+ | 5.75 | Brandon Woodruff | 119 | MIL |
| +006+ | 5.68 | Walker Buehler | 128.7 | LAN |
| +008+ | 5.3 | Lance Lynn | 97.7 | CHA |
| +009+ | 5.18 | Zack Wheeler | 125.7 | PHI |
| +011+ | 4.78 | Carlos Rodon | 96.7 | CHA |
| +012+ | 4.5 | Marcus Stroman | 111.7 | NYN |
| +013+ | 4.45 | Gerrit Cole | 120 | NYA |
| +014+ | 4.4 | Trevor Rogers | 106.3 | MIA |
| +015+ | 4.38 | Corbin Burnes | 96 | MIL |
| +023+ | 3.94 | Freddy Peralta | 98 | MIL |
| +032+ | 3.52 | Anthony DeSclafani | 119.3 | SFN |
| +031+ | 3.52 | Max Scherzer | 105 | WAS |
| +036+ | 3.32 | Wade Miley | 102.7 | CIN |
| +037+ | 3.3 | Kyle Gibson | 107 | TEX |
| +047+ | 2.87 | Robbie Ray | 112.3 | TOR |
| +049+ | 2.82 | Taijuan Walker | 95 | NYN |
| +052+ | 2.7 | John Means | 76 | BAL |
| +054+ | 2.67 | Luis Garcia | 91.3 | HOU |
| +057+ | 2.63 | Yu Darvish | 110.7 | SDN |
| +059+ | 2.62 | Sean Manaea | 116.7 | OAK |
| +060+ | 2.61 | Kwang Hyun Kim | 84.3 | SLN |
| +064+ | 2.54 | Sandy Alcantara | 119.7 | MIA |
| +068+ | 2.49 | Collin McHugh | 41.7 | TBA |
_