| Starter | Tm | Tier | Game |
|---|---|---|---|
| Aaron Harang | SEA | -3.77 | 201308190_SEA_OAK |
| Ian Kennedy | SDN | -3.53 | 201308210_PIT_SDN |
| Barry Zito | SFN | -2.82 | 201308210_BOS_SFN |
| Mike Pelfrey | MIN | -2.65 | 201308200_MIN_DET |
| Lucas Harrell | HOU | -2.54 | 201308190_HOU_TEX |
Based on accumulated WAA for this season up to 2013-08-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.25 | Clayton Kershaw | 190.3 | LAN |
| +006+ | 6.16 | Matt Harvey | 171.7 | NYN |
| +008+ | 5.55 | Hiroki Kuroda | 160.3 | NYA |
| +009+ | 5.45 | Adam Wainwright | 189.7 | SLN |
| +010+ | 5.32 | Patrick Corbin | 172.3 | ARI |
| +011+ | 5.13 | Felix Hernandez | 178.7 | SEA |
| +015+ | 4.87 | Jose Fernandez | 145.7 | MIA |
| +020+ | 4.49 | Anibal Sanchez | 139.7 | DET |
| +021+ | 4.46 | Yu Darvish | 161 | TEX |
| +026+ | 4.2 | Chris Sale | 165.3 | CHA |
| +028+ | 4.1 | Madison Bumgarner | 163 | SFN |
| +029+ | 4.05 | Max Scherzer | 172.3 | DET |
| +035+ | 3.74 | Derek Holland | 174 | TEX |
| +042+ | 3.61 | Francisco Liriano | 121 | PIT |
| +044+ | 3.6 | Hisashi Iwakuma | 178 | SEA |
| +049+ | 3.38 | Hyun-Jin Ryu | 155.7 | LAN |
| +051+ | 3.33 | Stephen Strasburg | 147.3 | WAS |
| +052+ | 3.3 | Mat Latos | 161 | CIN |
| +056+ | 3.16 | Julio Teheran | 149 | ATL |
| +059+ | 3.1 | Bruce Chen | 77.7 | KCA |
| +060+ | 3.07 | Ervin Santana | 167 | KCA |
| +061+ | 3.05 | Cliff Lee | 170.7 | PHI |
| +064+ | 3.01 | Zack Greinke | 133 | LAN |
| +065+ | 2.99 | Mike Minor | 158.7 | ATL |
| +067+ | 2.95 | Jeff Locke | 139.7 | PIT |
_