| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.05 | 190305240_BOS_CHA |
| Rube Waddell | OAK | 6.02 | 190305230_OAK_CLE |
| Bill Donovan | DET | 4.73 | 190305230_MIN_DET |
| Ed Siever | BAL | 4.45 | 190305220_BOS_BAL |
| Doc White | CHA | 3.47 | 190305230_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Evans | LAN | -2.39 | 190305230_PIT_LAN |
| Fred Mitchell | PHI | -2.17 | 190305230_CHN_PHI |
| Ed Poole | CIN | -1.6 | 190305230_CIN_ATL |
| Mike O'Neill | SLN | -0.92 | 190305230_SLN_SFN |
| Clark Griffith | NYA | -0.53 | 190305230_NYA_BAL |
Based on accumulated WAA for this season up to 1903-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.9 | Cy Young | 87.7 | BOS |
| +002+ | 3.59 | Eddie Plank | 70 | OAK |
| +003+ | 3.51 | Rube Waddell | 84 | OAK |
| +004+ | 3.48 | Bill Donovan | 62.7 | DET |
| +005+ | 3.38 | Addie Joss | 70 | CLE |
| +006+ | 3.31 | Roy Patterson | 64 | CHA |
| +007+ | 3.18 | George Mullin | 66 | DET |
| +008+ | 3.1 | Jack Chesbro | 72.7 | NYA |
| +009+ | 2.63 | Doc White | 59 | CHA |
| +010+ | 2.44 | Bill Dinneen | 66.7 | BOS |
| +013+ | 2.2 | Sam Leever | 55 | PIT |
| +014+ | 2.14 | Jack Sutthoff | 57 | CIN |
| +015+ | 2.09 | Ed Siever | 54 | BAL |
| +017+ | 1.89 | Jesse Tannehill | 54.3 | NYA |
| +019+ | 1.85 | Earl Moore | 44 | CLE |
| +020+ | 1.84 | Joe McGinnity | 89.7 | SFN |
| +021+ | 1.7 | Mal Eason | 38.3 | DET |
| +023+ | 1.64 | Jack Taylor | 81 | CHN |
| +024+ | 1.56 | Jack Powell | 55 | BAL |
| +025+ | 1.5 | Patsy Flaherty | 60.3 | CHA |
| +027+ | 1.44 | Chief Bender | 65.3 | OAK |
| +028+ | 1.43 | Willie Sudhoff | 45 | BAL |
| +032+ | 1.32 | Jake Weimer | 71.3 | CHN |
| +035+ | 1.3 | Red Donahue | 61 | BAL |
| XXXXX | 1.08 | Bob Wicker | 62.3 | TOT |
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