| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lucas Harrell | HOU | -5.43 | 201309080_HOU_OAK |
| CC Sabathia | NYA | -3.46 | 201309090_NYA_BAL |
| Ian Kennedy | SDN | -3.29 | 201309080_COL_SDN |
| Brandon McCarthy | ARI | -1.59 | 201309070_ARI_SFN |
| Esmil Rogers | TOR | -1.28 | 201309080_TOR_MIN |
Based on accumulated WAA for this season up to 2013-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 9.93 | Clayton Kershaw | 216 | LAN |
| +008+ | 6.3 | Jose Fernandez | 165.7 | MIA |
| +019+ | 4.73 | Madison Bumgarner | 188.3 | SFN |
| +021+ | 4.62 | Anibal Sanchez | 158.3 | DET |
| +022+ | 4.53 | Yu Darvish | 186.7 | TEX |
| +023+ | 4.48 | Chris Sale | 195.7 | CHA |
| +028+ | 4.23 | Adam Wainwright | 213.7 | SLN |
| +034+ | 4.09 | Bartolo Colon | 170.3 | OAK |
| +039+ | 4.05 | Cliff Lee | 191.7 | PHI |
| +040+ | 4.02 | Hisashi Iwakuma | 196.7 | SEA |
| +042+ | 3.95 | Zack Greinke | 154.7 | LAN |
| +044+ | 3.91 | Hiroki Kuroda | 183.7 | NYA |
| +045+ | 3.88 | Max Scherzer | 194.3 | DET |
| +046+ | 3.86 | Mat Latos | 191 | CIN |
| +050+ | 3.69 | Stephen Strasburg | 170 | WAS |
| +051+ | 3.64 | Jhoulys Chacin | 183.3 | COL |
| +053+ | 3.58 | Travis Wood | 186 | CHN |
| +054+ | 3.54 | Patrick Corbin | 190.7 | ARI |
| +056+ | 3.47 | Mike Minor | 179.7 | ATL |
| +065+ | 3.18 | Ricky Nolasco | 186.3 | TOT |
| +077+ | 2.84 | Tyson Ross | 103.3 | SDN |
| +079+ | 2.78 | Jarred Cosart | 60 | HOU |
| +081+ | 2.76 | Derek Holland | 190.3 | TEX |
| +082+ | 2.71 | Francisco Liriano | 136 | PIT |
| +083+ | 2.7 | Joe Kelly | 101.7 | SLN |
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