| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Siever | BAL | 3.97 | 190305290_BAL_DET |
| Doc White | CHA | 3.53 | 190305290_CHA_CLE |
| Bill Dinneen | BOS | 3.21 | 190305290_MIN_BOS |
| Eddie Plank | OAK | 2.56 | 190305280_NYA_OAK |
| Christy Mathewson | SFN | 2.48 | 190305290_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -3.87 | 190305290_PHI_LAN |
| Roy Evans | LAN | -2.12 | 190305280_SLN_LAN |
| War Sanders | SLN | -1.73 | 190305280_SLN_LAN |
| Bob Ewing | CIN | -0.74 | 190305270_CIN_PHI |
| Kaiser Wilhelm | PIT | -0.62 | 190305270_PIT_ATL |
Based on accumulated WAA for this season up to 1903-05-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.94 | Eddie Plank | 81 | OAK |
| +002+ | 3.85 | Rube Waddell | 93 | OAK |
| +003+ | 3.76 | Cy Young | 87.7 | BOS |
| +004+ | 3.69 | Addie Joss | 79 | CLE |
| +005+ | 3.43 | Jack Chesbro | 89.7 | NYA |
| +006+ | 3.35 | Bill Donovan | 62.7 | DET |
| +007+ | 3.22 | Roy Patterson | 64 | CHA |
| +008+ | 3.18 | Doc White | 68 | CHA |
| +009+ | 3.11 | George Mullin | 84 | DET |
| +010+ | 2.79 | Bill Dinneen | 75.7 | BOS |
| +011+ | 2.67 | Ed Siever | 63 | BAL |
| +012+ | 2.64 | Earl Moore | 53 | CLE |
| +013+ | 2.49 | Jack Sutthoff | 66 | CIN |
| +015+ | 2.25 | Patsy Flaherty | 69.3 | CHA |
| +016+ | 2.16 | Jesse Tannehill | 62 | NYA |
| +017+ | 2.15 | Jack Taylor | 98.3 | CHN |
| +018+ | 2.02 | Willie Sudhoff | 54 | BAL |
| +021+ | 1.86 | Mal Eason | 47.3 | DET |
| +022+ | 1.85 | Sam Leever | 63 | PIT |
| +024+ | 1.83 | Bill Bernhard | 62 | CLE |
| +026+ | 1.73 | Joe McGinnity | 98.7 | SFN |
| +027+ | 1.66 | Red Donahue | 70 | BAL |
| +029+ | 1.62 | Jack Powell | 63 | BAL |
| +031+ | 1.51 | Chief Bender | 73.3 | OAK |
| +036+ | 1.33 | Christy Mathewson | 92 | SFN |
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