| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Martinez | BOS | 5.06 | 200305030_MIN_BOS |
| Barry Zito | OAK | 4.79 | 200305040_OAK_NYA |
| Matt Morris | SLN | 4.53 | 200305040_WAS_SLN |
| Roy Oswalt | HOU | 3.67 | 200305040_MIA_HOU |
| Curt Schilling | ARI | 3.56 | 200305030_ATL_ARI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ryan Dempster | CIN | -4.91 | 200305040_CIN_SFN |
| Darren Oliver | COL | -2.07 | 200305030_COL_CHN |
| Adam Bernero | DET | -1.49 | 200305030_TBA_DET |
| Ruben Quevedo | MIL | -1.08 | 200305030_NYN_MIL |
| Darrell May | KCA | -0.95 | 200305050_BOS_KCA |
Based on accumulated WAA for this season up to 2003-05-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.83 | Runelvys Hernandez | 46.7 | KCA |
| +004+ | 2.79 | Mike Mussina | 45 | NYA |
| +006+ | 2.64 | Mark Prior | 43 | CHN |
| +008+ | 2.37 | Barry Zito | 49 | OAK |
| +010+ | 2.27 | Zach Day | 41.7 | WAS |
| +011+ | 2.22 | Woody Williams | 41 | SLN |
| +014+ | 2.09 | Scot Shields | 29 | ANA |
| +016+ | 2.02 | Jeff Suppan | 39.3 | PIT |
| +017+ | 2.01 | Jason Schmidt | 35.7 | SFN |
| +018+ | 2 | Brett Myers | 38.7 | PHI |
| +020+ | 1.98 | Matt Morris | 51.7 | SLN |
| +021+ | 1.97 | Esteban Loaiza | 39.7 | CHA |
| +022+ | 1.94 | Roger Clemens | 47 | NYA |
| +025+ | 1.89 | Shawn Chacon | 39.7 | COL |
| +026+ | 1.85 | Pedro Martinez | 49.3 | BOS |
| +028+ | 1.78 | Miguel Batista | 41.3 | ARI |
| +034+ | 1.69 | Damian Moss | 36.7 | SFN |
| +039+ | 1.63 | David Wells | 46 | NYA |
| +041+ | 1.61 | Jason Johnson | 35.7 | BAL |
| +042+ | 1.6 | Gil Meche | 37 | SEA |
| +050+ | 1.44 | Nate Cornejo | 34.7 | DET |
| +056+ | 1.37 | Kerry Wood | 45 | CHN |
| +055+ | 1.37 | Kevin Brown | 44.3 | LAN |
| +061+ | 1.29 | Kip Wells | 38.3 | PIT |
| +063+ | 1.27 | Brandon Webb | 15 | ARI |
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