| Starter | Tm | Tier | Game |
|---|---|---|---|
| Erasmo Ramirez | TBA | -3.63 | 201505140_NYA_TBA |
| Jeremy Hellickson | ARI | -3.27 | 201505130_WAS_ARI |
| Drew Hutchison | TOR | -2.94 | 201505140_TOR_HOU |
| Ricky Nolasco | MIN | -2 | 201505130_MIN_DET |
| Wade Miley | BOS | -1.89 | 201505130_BOS_OAK |
Based on accumulated WAA for this season up to 2015-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.04 | Sonny Gray | 56 | OAK |
| +004+ | 2.69 | Zack Greinke | 47.3 | LAN |
| +005+ | 2.68 | Dallas Keuchel | 57.7 | HOU |
| +007+ | 2.55 | Shelby Miller | 45 | ATL |
| +009+ | 2.51 | Aaron Harang | 53.3 | PHI |
| +011+ | 2.37 | A.J. Burnett | 45 | PIT |
| +013+ | 2.33 | Max Scherzer | 49.7 | WAS |
| +012+ | 2.33 | Felix Hernandez | 48.7 | SEA |
| +017+ | 2.02 | Nick Martinez | 43 | TEX |
| +018+ | 2 | Chris Young | 28.7 | KCA |
| +019+ | 1.96 | Jake Odorizzi | 53.3 | TBA |
| +022+ | 1.9 | Matt Harvey | 46.7 | NYN |
| +023+ | 1.84 | Mike Leake | 49.7 | CIN |
| +024+ | 1.82 | Michael Wacha | 43.7 | SLN |
| +032+ | 1.58 | Jon Niese | 43.3 | NYN |
| +033+ | 1.58 | Colby Lewis | 45 | TEX |
| +038+ | 1.53 | Gerrit Cole | 42.7 | PIT |
| +037+ | 1.53 | Chris Archer | 48.7 | TBA |
| +039+ | 1.53 | Wei-Yin Chen | 42.7 | BAL |
| +042+ | 1.48 | C.J. Wilson | 48 | ANA |
| +044+ | 1.47 | Hector Santiago | 41 | ANA |
| +052+ | 1.4 | Tim Lincecum | 40.7 | SFN |
| +053+ | 1.38 | Johnny Cueto | 58.3 | CIN |
| +056+ | 1.31 | Ubaldo Jimenez | 33.7 | BAL |
| +058+ | 1.29 | Kyle Gibson | 43.3 | MIN |
_