| Starter | Tm | Tier | Game |
|---|---|---|---|
| Edinson Volquez | LAN | -8.53 | 201309200_LAN_SDN |
| Aaron Harang | NYN | -4.38 | 201309180_SFN_NYN |
| CC Sabathia | NYA | -3.27 | 201309200_SFN_NYA |
| Scott Diamond | MIN | -3.02 | 201309180_MIN_CHA |
| Dallas Keuchel | HOU | -2.56 | 201309190_HOU_CLE |
Based on accumulated WAA for this season up to 2013-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +015+ | 5.43 | Anibal Sanchez | 172 | DET |
| +017+ | 5.39 | Hisashi Iwakuma | 211.7 | SEA |
| +018+ | 5.34 | Bartolo Colon | 184.3 | OAK |
| +019+ | 5.29 | Madison Bumgarner | 201.3 | SFN |
| +021+ | 5.25 | Clay Buchholz | 95.3 | BOS |
| +027+ | 4.97 | Yu Darvish | 198.7 | TEX |
| +029+ | 4.71 | Adam Wainwright | 229.3 | SLN |
| +031+ | 4.66 | Cliff Lee | 207.7 | PHI |
| +037+ | 4.4 | Zack Greinke | 166.7 | LAN |
| +042+ | 4.21 | Max Scherzer | 207.3 | DET |
| +052+ | 3.74 | Chris Sale | 201.3 | CHA |
| +055+ | 3.6 | Hyun-Jin Ryu | 181 | LAN |
| +058+ | 3.53 | Ervin Santana | 205 | KCA |
| +060+ | 3.45 | Francisco Liriano | 156 | PIT |
| +062+ | 3.41 | Jordan Zimmermann | 206.3 | WAS |
| +065+ | 3.38 | Hiroki Kuroda | 195.7 | NYA |
| +069+ | 3.23 | Jhoulys Chacin | 193.3 | COL |
| +075+ | 3.11 | Mike Minor | 191.7 | ATL |
| +078+ | 3.06 | Mat Latos | 203.7 | CIN |
| +079+ | 3.04 | Julio Teheran | 174.7 | ATL |
| +086+ | 2.95 | Mike Leake | 190.7 | CIN |
| +089+ | 2.92 | Joe Kelly | 111.7 | SLN |
| +090+ | 2.9 | Shelby Miller | 167.3 | SLN |
| +093+ | 2.85 | James Shields | 213.7 | KCA |
| +094+ | 2.82 | Patrick Corbin | 199 | ARI |
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