| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Harvey | CIN | -3.22 | 201805220_PIT_CIN |
| Jason Hammel | KCA | -3.04 | 201805220_KCA_SLN |
| James Shields | CHA | -2.51 | 201805220_BAL_CHA |
| Mike Leake | SEA | -1.46 | 201805220_SEA_OAK |
| Zack Wheeler | NYN | -1.41 | 201805220_MIA_NYN |
Based on accumulated WAA for this season up to 2018-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.89 | Justin Verlander | 68.7 | HOU |
| +003+ | 3.53 | Gerrit Cole | 67.7 | HOU |
| +004+ | 3.5 | Max Scherzer | 65.7 | WAS |
| +006+ | 3.03 | Chris Sale | 70.7 | BOS |
| +009+ | 2.83 | Corey Kluber | 72.3 | CLE |
| +010+ | 2.8 | Charlie Morton | 55.7 | HOU |
| +012+ | 2.72 | Jacob deGrom | 51.3 | NYN |
| +013+ | 2.61 | Aaron Nola | 64.7 | PHI |
| +015+ | 2.56 | Luis Severino | 65 | NYA |
| +016+ | 2.56 | Trevor Bauer | 65 | CLE |
| +019+ | 2.43 | Miles Mikolas | 60.3 | SLN |
| +021+ | 2.32 | Patrick Corbin | 62.3 | ARI |
| +024+ | 2.22 | Gio Gonzalez | 56.7 | WAS |
| +027+ | 2.09 | Sean Manaea | 66.3 | OAK |
| +031+ | 2.01 | Sean Newcomb | 52.7 | ATL |
| +044+ | 1.72 | Jon Lester | 50 | CHN |
| +046+ | 1.71 | Jeremy Hellickson | 38 | WAS |
| +051+ | 1.64 | Mike Clevinger | 59.7 | CLE |
| +052+ | 1.62 | Mike Foltynewicz | 53 | ATL |
| +057+ | 1.59 | CC Sabathia | 41.3 | NYA |
| +058+ | 1.57 | Ross Stripling | 34.7 | LAN |
| +064+ | 1.52 | Noah Syndergaard | 58.7 | NYN |
| +067+ | 1.46 | Trevor Williams | 59 | PIT |
| +068+ | 1.45 | Blake Snell | 58.7 | TBA |
| +069+ | 1.45 | Reynaldo Lopez | 54.3 | CHA |
_