| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 5.43 | 190309072_BOS_NYA |
| Willie Sudhoff | BAL | 3.09 | 190309072_DET_BAL |
| Eddie Plank | OAK | 2.43 | 190309092_OAK_NYA |
| Frank Kitson | DET | 1.4 | 190309071_DET_BAL |
| Roy Patterson | CHA | 1.35 | 190309080_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.77 | 190309081_PHI_ATL |
| Togie Pittinger | ATL | -4.01 | 190309072_PHI_ATL |
| Henry Schmidt | LAN | -3.01 | 190309072_LAN_SFN |
| Bob Rhoads | CLE | -2.94 | 190309092_BAL_CLE |
| Ed Poole | CIN | -1.59 | 190309071_SLN_CIN |
Based on accumulated WAA for this season up to 1903-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.2 | Cy Young | 305.7 | BOS |
| +003+ | 11.21 | Bill Donovan | 262 | DET |
| +004+ | 10.74 | George Mullin | 282.7 | DET |
| +006+ | 10.53 | Doc White | 265.7 | CHA |
| +007+ | 10.31 | Willie Sudhoff | 256.7 | BAL |
| +008+ | 10.24 | Bill Dinneen | 264 | BOS |
| +009+ | 10.07 | Rube Waddell | 324 | OAK |
| +010+ | 8.23 | Eddie Plank | 281.7 | OAK |
| +013+ | 6.91 | Frank Kitson | 225.7 | DET |
| +014+ | 6.9 | Tom Hughes | 213.7 | BOS |
| +016+ | 6.46 | Roy Patterson | 252.7 | CHA |
| +018+ | 6.39 | Red Donahue | 228 | TOT |
| +020+ | 6.11 | Jack Chesbro | 290.3 | NYA |
| +021+ | 6.1 | Jack Powell | 268.3 | BAL |
| +023+ | 5.85 | Ed Siever | 209 | BAL |
| +024+ | 5.48 | Clark Griffith | 204 | NYA |
| +025+ | 5.43 | Chief Bender | 240.3 | OAK |
| +028+ | 4.61 | Sam Leever | 258 | PIT |
| +039+ | 3.76 | Jesse Tannehill | 220.3 | NYA |
| +042+ | 3.54 | Barney Wolfe | 124.3 | NYA |
| +045+ | 3.4 | Joe McGinnity | 380.7 | SFN |
| +046+ | 3.33 | Highball Wilson | 223.3 | MIN |
| +049+ | 3.04 | Christy Mathewson | 333 | SFN |
| +054+ | 2.75 | Casey Patten | 262 | MIN |
| +055+ | 2.69 | Rube Kisinger | 93.7 | DET |
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