| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jacob deGrom | NYN | 8.94 | 202104230_WAS_NYN |
| Shane Bieber | CLE | 8.92 | 202104240_NYA_CLE |
| Gerrit Cole | NYA | 6.74 | 202104240_NYA_CLE |
| Clayton Kershaw | LAN | 6.36 | 202104230_SDN_LAN |
| Hyun Jin Ryu | TOR | 4.73 | 202104250_TOR_TBA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jorge Lopez | BAL | -6.88 | 202104230_OAK_BAL |
| Trevor Cahill | PIT | -3.54 | 202104240_PIT_MIN |
| Yusei Kikuchi | SEA | -2.67 | 202104230_SEA_BOS |
| Martin Perez | BOS | -1.92 | 202104230_SEA_BOS |
| Drew Smyly | ATL | -1.68 | 202104252_ARI_ATL |
Based on accumulated WAA for this season up to 2021-04-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.5 | Jacob deGrom | 29 | NYN |
| +003+ | 2.02 | Corbin Burnes | 24.3 | MIL |
| +005+ | 1.96 | Danny Duffy | 23 | KCA |
| +006+ | 1.87 | Matt Boyd | 34.7 | DET |
| +007+ | 1.8 | John Means | 30 | BAL |
| +008+ | 1.78 | Joe Musgrove | 29 | SDN |
| +010+ | 1.66 | Gerrit Cole | 31.7 | NYA |
| +011+ | 1.61 | Brandon Woodruff | 29 | MIL |
| +012+ | 1.61 | Carlos Rodon | 19 | CHA |
| +016+ | 1.46 | Lance Lynn | 19.7 | CHA |
| +017+ | 1.44 | Kevin Gausman | 33.7 | SFN |
| +019+ | 1.39 | Max Scherzer | 25 | WAS |
| +021+ | 1.32 | Tyler Glasnow | 30.7 | TBA |
| +023+ | 1.3 | Shane Bieber | 36.3 | CLE |
| XXXXX | 1.19 | Yu Darvish | 31.7 | SDN |
| XXXXX | 1.18 | Ryan Weathers | 15.3 | SDN |
| XXXXX | 1.12 | JT Brubaker | 22.3 | PIT |
| XXXXX | 1.1 | Trevor Rogers | 22 | MIA |
| XXXXX | 1.09 | Kyle Gibson | 27.3 | TEX |
| XXXXX | 1.08 | Tyler Mahle | 20.7 | CIN |
| XXXXX | 1.01 | Walker Buehler | 25 | LAN |
| XXXXX | 1.01 | Marcus Stroman | 24.3 | NYN |
| XXXXX | 1.01 | Trevor Bauer | 32 | LAN |
| XXXXX | 1.01 | Johnny Cueto | 20 | SFN |
| XXXXX | 1 | Jon Gray | 28.3 | COL |
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