| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gerrit Cole | NYA | 8.26 | 202105220_CHA_NYA |
| Shane Bieber | CLE | 5.91 | 202105220_MIN_CLE |
| Yu Darvish | SDN | 5.51 | 202105230_SEA_SDN |
| Hyun Jin Ryu | TOR | 4.94 | 202105230_TBA_TOR |
| Brandon Woodruff | MIL | 4.84 | 202105240_SDN_MIL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Harvey | BAL | -4.03 | 202105230_BAL_WAS |
| Mitch Keller | PIT | -3.38 | 202105220_PIT_ATL |
| Jordan Lyles | TEX | -2.9 | 202105220_HOU_TEX |
| Antonio Senzatela | COL | -1.42 | 202105220_ARI_COL |
| Yusei Kikuchi | SEA | -1.37 | 202105240_SEA_OAK |
Based on accumulated WAA for this season up to 2021-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.9 | Brandon Woodruff | 64 | MIL |
| +002+ | 3.55 | John Means | 65.3 | BAL |
| +003+ | 3.52 | Gerrit Cole | 64.7 | NYA |
| +004+ | 3.34 | Kevin Gausman | 59.7 | SFN |
| +005+ | 3.27 | Yu Darvish | 61.7 | SDN |
| +008+ | 3.18 | Lance Lynn | 47.7 | CHA |
| +010+ | 3 | Trevor Bauer | 63.7 | LAN |
| +011+ | 2.92 | Trevor Rogers | 56.7 | MIA |
| +012+ | 2.9 | Carlos Rodon | 42.7 | CHA |
| +014+ | 2.72 | Zack Wheeler | 68 | PHI |
| +020+ | 2.53 | Kyle Gibson | 60.3 | TEX |
| +022+ | 2.48 | Max Scherzer | 56.3 | WAS |
| +027+ | 2.15 | Danny Duffy | 41.7 | KCA |
| +029+ | 2.1 | Corbin Burnes | 40.3 | MIL |
| +030+ | 2.09 | Alex Wood | 42 | SFN |
| +035+ | 1.95 | Jack Flaherty | 53.3 | SLN |
| +037+ | 1.93 | Taijuan Walker | 48.7 | NYN |
| +039+ | 1.9 | John Gant | 39.7 | SLN |
| +040+ | 1.89 | Hyun Jin Ryu | 53.3 | TOR |
| +041+ | 1.87 | Walker Buehler | 58.3 | LAN |
| +042+ | 1.85 | Joe Musgrove | 51 | SDN |
| +046+ | 1.81 | Pablo Lopez | 56 | MIA |
| +048+ | 1.8 | Ryan Weathers | 30.3 | SDN |
| +051+ | 1.72 | Freddy Peralta | 49.7 | MIL |
| +053+ | 1.7 | Michael Kopech | 30.3 | CHA |
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