| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clay Buchholz | BOS | 2.72 | 201309150_NYA_BOS |
| Yu Darvish | TEX | 2.46 | 201309140_OAK_TEX |
| Chris Sale | CHA | 2.43 | 201309150_CLE_CHA |
| Cliff Lee | PHI | 2.36 | 201309160_MIA_PHI |
| Bartolo Colon | OAK | 1.99 | 201309140_OAK_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Edinson Volquez | LAN | -8.14 | 201309150_SFN_LAN |
| Joe Saunders | SEA | -4.21 | 201309160_SEA_DET |
| CC Sabathia | NYA | -2.76 | 201309140_NYA_BOS |
| Ryan Vogelsong | SFN | -2.31 | 201309150_SFN_LAN |
| Edwin Jackson | CHN | -1.76 | 201309160_CHN_MIL |
Based on accumulated WAA for this season up to 2013-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.12 | Clayton Kershaw | 223 | LAN |
| +016+ | 5.29 | Anibal Sanchez | 165.7 | DET |
| +017+ | 5.28 | Clay Buchholz | 95.3 | BOS |
| +020+ | 4.97 | Yu Darvish | 193.7 | TEX |
| +022+ | 4.85 | Madison Bumgarner | 194.3 | SFN |
| +023+ | 4.83 | Bartolo Colon | 178.3 | OAK |
| +026+ | 4.75 | Adam Wainwright | 221.7 | SLN |
| +027+ | 4.69 | Cliff Lee | 207.7 | PHI |
| +028+ | 4.67 | Hisashi Iwakuma | 203.7 | SEA |
| +039+ | 4.31 | Max Scherzer | 201.3 | DET |
| +041+ | 4.26 | Zack Greinke | 160.7 | LAN |
| +046+ | 3.89 | Patrick Corbin | 197 | ARI |
| +049+ | 3.76 | Travis Wood | 192 | CHN |
| +050+ | 3.74 | Chris Sale | 201.3 | CHA |
| +055+ | 3.58 | Hyun-Jin Ryu | 181 | LAN |
| +059+ | 3.45 | Hiroki Kuroda | 189.7 | NYA |
| +061+ | 3.43 | Mat Latos | 197.7 | CIN |
| +064+ | 3.27 | Shelby Miller | 161.3 | SLN |
| +068+ | 3.19 | Jhoulys Chacin | 187.3 | COL |
| +070+ | 3.18 | Mike Minor | 185.7 | ATL |
| +071+ | 3.16 | Francisco Liriano | 148 | PIT |
| +076+ | 3.09 | Ervin Santana | 197.7 | KCA |
| +078+ | 3.03 | Julio Teheran | 174.7 | ATL |
| +084+ | 2.86 | James Shields | 213.7 | KCA |
| +098+ | 2.64 | Alex Cobb | 128 | TBA |
_