| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shane Bieber | CLE | 9.26 | 202104300_CLE_CHA |
| Gerrit Cole | NYA | 7.78 | 202104300_DET_NYA |
| Yu Darvish | SDN | 3.77 | 202104300_SFN_SDN |
| Lance Lynn | CHA | 3.77 | 202105010_CLE_CHA |
| Brandon Woodruff | MIL | 2.63 | 202105010_LAN_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jorge Lopez | BAL | -6.54 | 202104290_NYA_BAL |
| Yusei Kikuchi | SEA | -3.16 | 202104290_SEA_HOU |
| Drew Smyly | ATL | -2.56 | 202104300_ATL_TOR |
| Trevor Cahill | PIT | -2.55 | 202105010_SLN_PIT |
| Jordan Lyles | TEX | -2.54 | 202105010_BOS_TEX |
Based on accumulated WAA for this season up to 2021-05-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.85 | Jacob deGrom | 35 | NYN |
| +002+ | 2.42 | Danny Duffy | 30 | KCA |
| +004+ | 2.21 | Gerrit Cole | 37.7 | NYA |
| +007+ | 2 | John Means | 37 | BAL |
| +008+ | 1.99 | Carlos Rodon | 25 | CHA |
| +009+ | 1.96 | Tyler Glasnow | 37.7 | TBA |
| +011+ | 1.8 | Joe Musgrove | 29 | SDN |
| +014+ | 1.71 | Brandon Woodruff | 35 | MIL |
| +015+ | 1.67 | Trevor Rogers | 28 | MIA |
| +016+ | 1.66 | Anthony DeSclafani | 36 | SFN |
| +019+ | 1.62 | Corbin Burnes | 29.3 | MIL |
| +018+ | 1.62 | Matt Boyd | 35.7 | DET |
| +020+ | 1.61 | Clayton Kershaw | 38.7 | LAN |
| +021+ | 1.57 | Yu Darvish | 38 | SDN |
| +022+ | 1.51 | Cristian Javier | 20.7 | HOU |
| +024+ | 1.48 | Marcus Stroman | 29.3 | NYN |
| +026+ | 1.44 | Kevin Gausman | 33.7 | SFN |
| +028+ | 1.43 | Kyle Gibson | 33.3 | TEX |
| +036+ | 1.33 | Lance Lynn | 24.7 | CHA |
| +037+ | 1.32 | Tyler Mahle | 25.7 | CIN |
| +039+ | 1.31 | Trevor Bauer | 40 | LAN |
| +040+ | 1.28 | Ryan Weathers | 16.3 | SDN |
| XXXXX | 1.22 | Pablo Lopez | 34.7 | MIA |
| XXXXX | 1.21 | Shane Bieber | 42.3 | CLE |
| XXXXX | 1.17 | Michael Kopech | 18.7 | CHA |
_