| Starter | Tm | Tier | Game |
|---|---|---|---|
| Shane Bieber | CLE | 6.67 | 202105160_CLE_SEA |
| Clayton Kershaw | LAN | 4.93 | 202105140_MIA_LAN |
| Max Scherzer | WAS | 4.48 | 202105140_WAS_ARI |
| Marcus Stroman | NYN | 3.24 | 202105160_NYN_TBA |
| Tyler Glasnow | TBA | 1.98 | 202105140_NYN_TBA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jorge Lopez | BAL | -4.74 | 202105150_NYA_BAL |
| Trevor Williams | CHN | -4.35 | 202105150_CHN_DET |
| Mitch Keller | PIT | -3.51 | 202105160_SFN_PIT |
| Jeff Hoffman | CIN | -2.72 | 202105160_CIN_COL |
| Jose Quintana | ANA | -2.55 | 202105160_ANA_BOS |
Based on accumulated WAA for this season up to 2021-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.46 | John Means | 52 | BAL |
| +002+ | 3.21 | Gerrit Cole | 52.7 | NYA |
| +003+ | 3.21 | Jacob deGrom | 40 | NYN |
| +005+ | 2.75 | Kevin Gausman | 53.7 | SFN |
| +006+ | 2.67 | Brandon Woodruff | 49.3 | MIL |
| +008+ | 2.38 | Trevor Bauer | 57.3 | LAN |
| +009+ | 2.38 | Max Scherzer | 51.3 | WAS |
| +011+ | 2.31 | Lance Lynn | 34.7 | CHA |
| +012+ | 2.29 | Carlos Rodon | 36.7 | CHA |
| +017+ | 2.18 | Kyle Gibson | 54.3 | TEX |
| +018+ | 2.17 | Trevor Rogers | 44 | MIA |
| +019+ | 2.15 | Tyler Glasnow | 57.3 | TBA |
| +021+ | 2.14 | Danny Duffy | 41.7 | KCA |
| +022+ | 2.14 | Yu Darvish | 47.7 | SDN |
| +023+ | 2.06 | Anthony DeSclafani | 46.3 | SFN |
| +028+ | 1.93 | Alex Wood | 36 | SFN |
| +030+ | 1.92 | Corbin Burnes | 34.3 | MIL |
| +029+ | 1.92 | Matt Boyd | 47.7 | DET |
| +033+ | 1.8 | John Gant | 34.3 | SLN |
| +036+ | 1.78 | Jack Flaherty | 47.3 | SLN |
| +039+ | 1.66 | Dylan Cease | 41 | CHA |
| +040+ | 1.65 | Taijuan Walker | 45.7 | NYN |
| +041+ | 1.64 | Freddy Peralta | 45 | MIL |
| +042+ | 1.62 | Ryan Weathers | 26.3 | SDN |
| +046+ | 1.54 | Marcus Stroman | 46.7 | NYN |
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