| Starter | Tm | Tier | Game |
|---|---|---|---|
| Clayton Kershaw | LAN | 13.6 | 201305310_LAN_COL |
| Cliff Lee | PHI | 7.72 | 201306020_MIL_PHI |
| Hiroki Kuroda | NYA | 4.45 | 201306020_BOS_NYA |
| Johnny Cueto | CIN | 4.17 | 201305310_CIN_PIT |
| James Shields | KCA | 4.1 | 201306010_KCA_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ubaldo Jimenez | CLE | -4.24 | 201306010_TBA_CLE |
| Mike Pelfrey | MIN | -3.87 | 201305310_SEA_MIN |
| Rick Porcello | DET | -3.35 | 201306020_DET_BAL |
| Edinson Volquez | SDN | -2.76 | 201306020_TOR_SDN |
| Wily Peralta | MIL | -1.9 | 201306010_MIL_PHI |
Based on accumulated WAA for this season up to 2013-06-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.45 | Clayton Kershaw | 87.3 | LAN |
| +004+ | 4.37 | Clay Buchholz | 77.7 | BOS |
| +006+ | 3.49 | Hisashi Iwakuma | 80.3 | SEA |
| +007+ | 3.48 | Matt Harvey | 83 | NYN |
| +008+ | 3.46 | Shelby Miller | 69.3 | SLN |
| +009+ | 3.39 | Adam Wainwright | 89 | SLN |
| +010+ | 3.3 | Cliff Lee | 88.3 | PHI |
| +013+ | 3.18 | Patrick Corbin | 74.3 | ARI |
| +014+ | 3.13 | Felix Hernandez | 83.3 | SEA |
| +015+ | 3.07 | Jordan Zimmermann | 79.7 | WAS |
| +019+ | 2.63 | Matt Moore | 62 | TBA |
| +022+ | 2.57 | Stephen Strasburg | 74.3 | WAS |
| +023+ | 2.55 | Mike Minor | 72.7 | ATL |
| +024+ | 2.54 | Chris Sale | 70 | CHA |
| +025+ | 2.53 | Jeff Locke | 64 | PIT |
| +028+ | 2.42 | James Shields | 86 | KCA |
| +029+ | 2.39 | Hiroki Kuroda | 73 | NYA |
| +033+ | 2.29 | Yu Darvish | 81.3 | TEX |
| +038+ | 2.16 | A.J. Burnett | 76 | PIT |
| +041+ | 2.12 | Travis Wood | 72 | CHN |
| +043+ | 2.06 | Mike Leake | 68.7 | CIN |
| +047+ | 2 | Derek Holland | 73.7 | TEX |
| +050+ | 1.93 | Jeff Samardzija | 79 | CHN |
| +055+ | 1.83 | Mat Latos | 77.7 | CIN |
| +056+ | 1.83 | Jerome Williams | 59.3 | ANA |
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