| Starter | Tm | Tier | Game |
|---|---|---|---|
| Edinson Volquez | LAN | -9.67 | 201309100_ARI_LAN |
| Lucas Harrell | HOU | -5.43 | 201309080_HOU_OAK |
| Joe Saunders | SEA | -3.5 | 201309100_HOU_SEA |
| CC Sabathia | NYA | -3.46 | 201309090_NYA_BAL |
| Ian Kennedy | SDN | -3.29 | 201309080_COL_SDN |
Based on accumulated WAA for this season up to 2013-09-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.93 | Clayton Kershaw | 216 | LAN |
| +007+ | 6.33 | Jose Fernandez | 165.7 | MIA |
| +019+ | 4.76 | Madison Bumgarner | 188.3 | SFN |
| +021+ | 4.74 | Clay Buchholz | 89.3 | BOS |
| +024+ | 4.64 | Anibal Sanchez | 158.3 | DET |
| +025+ | 4.55 | Yu Darvish | 186.7 | TEX |
| +026+ | 4.51 | Chris Sale | 195.7 | CHA |
| +031+ | 4.26 | Adam Wainwright | 213.7 | SLN |
| +035+ | 4.12 | Bartolo Colon | 170.3 | OAK |
| +038+ | 4.07 | Cliff Lee | 191.7 | PHI |
| +039+ | 4.05 | Hisashi Iwakuma | 196.7 | SEA |
| +042+ | 3.95 | Zack Greinke | 154.7 | LAN |
| +043+ | 3.94 | Hiroki Kuroda | 183.7 | NYA |
| +044+ | 3.91 | Max Scherzer | 194.3 | DET |
| +045+ | 3.88 | Mat Latos | 191 | CIN |
| +050+ | 3.71 | Stephen Strasburg | 170 | WAS |
| +052+ | 3.66 | Jhoulys Chacin | 183.3 | COL |
| +053+ | 3.6 | Travis Wood | 186 | CHN |
| +054+ | 3.55 | Patrick Corbin | 190.7 | ARI |
| +056+ | 3.49 | Mike Minor | 179.7 | ATL |
| +063+ | 3.27 | Julio Teheran | 168 | ATL |
| +066+ | 3.19 | Ricky Nolasco | 186.3 | TOT |
| +071+ | 3.06 | Francisco Liriano | 142 | PIT |
| +073+ | 3.05 | Shelby Miller | 156.3 | SLN |
| +080+ | 2.85 | Tyson Ross | 103.3 | SDN |
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