| Starter | Tm | Tier | Game |
|---|---|---|---|
| Homer Bailey | KCA | -4.2 | 201905222_KCA_SLN |
| Ivan Nova | CHA | -2.88 | 201905220_CHA_HOU |
| Trevor Cahill | ANA | -2.79 | 201905210_MIN_ANA |
| Dan Straily | BAL | -2.68 | 201905220_NYA_BAL |
| Wilmer Font | NYN | -1.88 | 201905200_WAS_NYN |
Based on accumulated WAA for this season up to 2019-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 3.87 | Hyun-Jin Ryu | 59.3 | LAN |
| +004+ | 3.58 | Justin Verlander | 72.3 | HOU |
| +007+ | 3.43 | Mike Soroka | 44.7 | ATL |
| +010+ | 2.88 | Luis Castillo | 64.3 | CIN |
| +011+ | 2.84 | Chris Paddack | 51.3 | SDN |
| +013+ | 2.63 | Tyler Glasnow | 48.3 | TBA |
| +015+ | 2.53 | Frankie Montas | 60 | OAK |
| +016+ | 2.51 | Mike Minor | 64.7 | TEX |
| +018+ | 2.45 | Jordan Lyles | 45.7 | PIT |
| +019+ | 2.42 | Jake Odorizzi | 53 | MIN |
| +021+ | 2.35 | Caleb Smith | 53 | MIA |
| +023+ | 2.32 | Zach Davies | 55.7 | MIL |
| +028+ | 2.23 | Marcus Stroman | 64 | TOR |
| +030+ | 2.2 | Zack Greinke | 71.7 | ARI |
| +032+ | 2.16 | Domingo German | 55.3 | NYA |
| +034+ | 2.12 | Zach Eflin | 62 | PHI |
| +035+ | 2.11 | Jon Lester | 43 | CHN |
| +038+ | 2.01 | Spencer Turnbull | 53.7 | DET |
| +040+ | 1.96 | Charlie Morton | 54.3 | TBA |
| +043+ | 1.88 | Max Fried | 56.3 | ATL |
| +052+ | 1.79 | Martin Perez | 53 | MIN |
| +058+ | 1.71 | John Means | 43.7 | BAL |
| +062+ | 1.64 | Patrick Corbin | 63.7 | WAS |
| +063+ | 1.62 | Masahiro Tanaka | 58.3 | NYA |
| +069+ | 1.58 | Max Scherzer | 71.3 | WAS |
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