| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 4.74 | 190308232_BOS_BAL |
| Earl Moore | CLE | 4.44 | 190308220_OAK_CLE |
| Bill Donovan | DET | 3.94 | 190308211_OAK_DET |
| Doc White | CHA | 3.68 | 190308231_NYA_CHA |
| Rube Waddell | OAK | 3.67 | 190308211_OAK_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Henry Schmidt | LAN | -3.11 | 190308221_CIN_LAN |
| Chick Fraser | PHI | -2.71 | 190308212_SLN_PHI |
| Bob Rhoads | SLN | -1.72 | 190308212_SLN_PHI |
| Ed Poole | CIN | -1.18 | 190308212_CIN_ATL |
| Ed Doheny | PIT | -1.16 | 190308221_PIT_PHI |
Based on accumulated WAA for this season up to 1903-08-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.28 | Earl Moore | 230.7 | CLE |
| +002+ | 11.76 | Cy Young | 275.7 | BOS |
| +003+ | 10.85 | Willie Sudhoff | 230.7 | BAL |
| +004+ | 10.77 | Rube Waddell | 324 | OAK |
| +005+ | 10.74 | Bill Donovan | 236 | DET |
| +006+ | 10.17 | Addie Joss | 265.7 | CLE |
| +007+ | 9.72 | Doc White | 248.7 | CHA |
| +008+ | 9.34 | George Mullin | 253 | DET |
| +009+ | 8.32 | Eddie Plank | 245.7 | OAK |
| +010+ | 8.26 | Bill Dinneen | 229.7 | BOS |
| +012+ | 6.59 | Frank Kitson | 192.7 | DET |
| +017+ | 5.47 | Tom Hughes | 177.7 | BOS |
| +018+ | 5.4 | Jack Chesbro | 257.3 | NYA |
| +019+ | 5.36 | Red Donahue | 187 | TOT |
| +020+ | 5.19 | Roy Patterson | 218.7 | CHA |
| +021+ | 5.07 | Chief Bender | 214.3 | OAK |
| +023+ | 4.84 | Ed Siever | 183 | BAL |
| +024+ | 4.78 | Barney Wolfe | 107.3 | NYA |
| +026+ | 4.47 | Clark Griffith | 186 | NYA |
| +028+ | 4.12 | Sam Leever | 220 | PIT |
| +029+ | 4.11 | Christy Mathewson | 289.3 | SFN |
| +044+ | 2.92 | Jack Powell | 224.3 | BAL |
| +047+ | 2.64 | Casey Patten | 236 | MIN |
| +053+ | 2.12 | Highball Wilson | 188.3 | MIN |
| +058+ | 1.98 | Noodles Hahn | 228.7 | CIN |
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