| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cliff Lee | CLE | 5.59 | 200807300_DET_CLE |
| Dan Haren | ARI | 5.27 | 200807300_ARI_SDN |
| Roy Halladay | TOR | 5.16 | 200807290_TBA_TOR |
| Rich Harden | CHN | 2.97 | 200807310_CHN_MIL |
| Ben Sheets | MIL | 2.92 | 200807290_CHN_MIL |
Based on accumulated WAA for this season up to 2008-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.84 | Cliff Lee | 146.7 | CLE |
| +004+ | 5.67 | Dan Haren | 147.7 | ARI |
| +006+ | 5.44 | Roy Halladay | 167.3 | TOR |
| +008+ | 5.29 | Justin Duchscherer | 121.7 | OAK |
| +010+ | 5.16 | Rich Harden | 101.3 | TOT |
| +011+ | 4.94 | Tim Lincecum | 142.7 | SFN |
| +012+ | 4.81 | Edinson Volquez | 133 | CIN |
| +014+ | 4.7 | Carlos Zambrano | 141.7 | CHN |
| +017+ | 4.46 | Ryan Dempster | 145.7 | CHN |
| +019+ | 4.41 | Brandon Webb | 154 | ARI |
| +021+ | 4.36 | Johan Santana | 147.7 | NYN |
| +026+ | 4.06 | Jake Peavy | 114.7 | SDN |
| +029+ | 3.99 | Joba Chamberlain | 84.3 | NYA |
| +031+ | 3.92 | Chad Billingsley | 138.7 | LAN |
| +032+ | 3.85 | Tim Hudson | 142 | ATL |
| +034+ | 3.83 | Felix Hernandez | 131 | SEA |
| +037+ | 3.78 | Joe Saunders | 139.7 | ANA |
| +041+ | 3.73 | Jair Jurrjens | 132.3 | ATL |
| +046+ | 3.63 | Jon Lester | 139.3 | BOS |
| +047+ | 3.62 | Ben Sheets | 140.3 | MIL |
| +049+ | 3.56 | C.C. Sabathia | 162 | TOT |
| +050+ | 3.55 | Jorge Campillo | 101 | ATL |
| +051+ | 3.54 | Cole Hamels | 154.3 | PHI |
| +065+ | 3.13 | John Lackey | 101.3 | ANA |
| +066+ | 3.12 | Scott Kazmir | 95 | TBA |
_