| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Maroth | DET | -3.92 | 200309120_KCA_DET |
| Brett Tomko | SLN | -3.57 | 200309100_COL_SLN |
| Mark Hendrickson | TOR | -2.27 | 200309100_TOR_TBA |
| Mickey Callaway | TEX | -1.62 | 200309110_TEX_SEA |
| Oliver Perez | PIT | -1.33 | 200309100_PIT_CIN |
Based on accumulated WAA for this season up to 2003-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.61 | Jason Schmidt | 193.7 | SFN |
| +004+ | 9.3 | Tim Hudson | 221 | OAK |
| +006+ | 8.6 | Kevin Brown | 192 | LAN |
| +008+ | 8.24 | Mark Prior | 188.3 | CHN |
| +009+ | 8.21 | Esteban Loaiza | 204.7 | CHA |
| +011+ | 7.73 | Pedro Martinez | 167.7 | BOS |
| +012+ | 7.42 | Livan Hernandez | 214 | WAS |
| +017+ | 6.86 | Carlos Zambrano | 195.3 | CHN |
| +019+ | 6.69 | Brandon Webb | 164.7 | ARI |
| +021+ | 6.47 | Roy Halladay | 243 | TOR |
| +029+ | 5.64 | Javier Vazquez | 209 | WAS |
| +036+ | 5.2 | Mike Mussina | 197.3 | NYA |
| +046+ | 4.84 | Barry Zito | 212.3 | OAK |
| +050+ | 4.43 | Johan Santana | 142.7 | MIN |
| +055+ | 4.28 | Miguel Batista | 176 | ARI |
| +061+ | 4.09 | Kerry Wood | 195 | CHN |
| +063+ | 4.04 | Wilson Alvarez | 79 | LAN |
| +065+ | 4.03 | Josh Beckett | 121 | MIA |
| +066+ | 4.02 | Jamie Moyer | 192 | SEA |
| +073+ | 3.78 | Scot Shields | 125.3 | ANA |
| +075+ | 3.72 | Sidney Ponson | 198 | TOT |
| +078+ | 3.67 | Kip Wells | 177 | PIT |
| +080+ | 3.57 | Dontrelle Willis | 137 | MIA |
| +084+ | 3.43 | Kazuhisa Ishii | 135 | LAN |
| +085+ | 3.43 | Ryan Franklin | 190.3 | SEA |
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