| 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 |
| Doc White | CHA | 3.47 | 190305230_BOS_CHA |
| Sam Leever | PIT | 2.87 | 190305250_PIT_LAN |
| 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 |
| Mordecai Brown | SLN | -1.12 | 190305250_SLN_SFN |
| Wiley Piatt | ATL | -0.7 | 190305250_CIN_ATL |
Based on accumulated WAA for this season up to 1903-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.96 | Eddie Plank | 78 | OAK |
| +002+ | 3.87 | Cy Young | 87.7 | BOS |
| +003+ | 3.5 | Rube Waddell | 84 | OAK |
| +004+ | 3.45 | Bill Donovan | 62.7 | DET |
| +005+ | 3.41 | George Mullin | 75 | DET |
| +006+ | 3.35 | Addie Joss | 70 | CLE |
| +007+ | 3.29 | Roy Patterson | 64 | CHA |
| +008+ | 2.84 | Jack Chesbro | 80.7 | NYA |
| +009+ | 2.72 | Earl Moore | 53 | CLE |
| +010+ | 2.61 | Doc White | 59 | CHA |
| +012+ | 2.42 | Bill Dinneen | 66.7 | BOS |
| +014+ | 2.11 | Jack Sutthoff | 57 | CIN |
| +015+ | 2.08 | Ed Siever | 54 | BAL |
| +016+ | 2.08 | Willie Sudhoff | 54 | BAL |
| +018+ | 1.92 | Sam Leever | 63 | PIT |
| +019+ | 1.88 | Jesse Tannehill | 54.3 | NYA |
| +020+ | 1.82 | Joe McGinnity | 89.7 | SFN |
| +022+ | 1.68 | Mal Eason | 38.3 | DET |
| +023+ | 1.61 | Jack Taylor | 81 | CHN |
| +025+ | 1.54 | Jack Powell | 55 | BAL |
| +027+ | 1.48 | Patsy Flaherty | 60.3 | CHA |
| +028+ | 1.44 | Chief Bender | 65.3 | OAK |
| +036+ | 1.3 | Jake Weimer | 71.3 | CHN |
| +038+ | 1.28 | Red Donahue | 61 | BAL |
| XXXXX | 1.06 | Bob Wicker | 62.3 | TOT |
_